Art forgery

Art forgery is the creating and selling of works of art which are falsely credited to other, usually more famous artists. Art forgery can be extremely lucrative, but modern dating and analysis techniques have made the identification of forged artwork much simpler.

A City on a Rock, long attributed to Goya, is now thought to have been painted by 19th-century artist Eugenio Lucas Velázquez. Elements of the painting appear to have been copied from autographed works by Goya, and the painting is therefore classified as a pastiche. Compare to Goya's May tree.

History
Forged self-portrait of Albrecht Dürer.

Art forgery dates back more than two thousand years. Roman sculptors produced copies of Greek sculptures. The contemporary buyers likely knew that they were not genuine. During the classical period art was generally created for historical reference, religious inspiration, or simply aesthetic enjoyment. The identity of the artist was often of little importance to the buyer.

During the Renaissance, many painters took on apprentices who studied painting techniques by copying the works and style of the master. As a payment for the training, the master would then sell these works. This practice was generally considered a tribute, not forgery, although some of these copies have later erroneously been attributed to the master.

Following the Renaissance, the increasing prosperity of the bourgeoisie created a fierce demand for art. Near the end of the 14th century, Roman statues were unearthed in Italy, intensifying the populace's interest in antiquities, and leading to a sharp increase in the value of these objects. This upsurge soon extended to contemporary and recently deceased artists. Art had become a commercial commodity, and the monetary value of the artwork came to depend on the identity of the artist. To identify their works, painters began to mark them. These marks later evolved into signatures. As the demand for certain artwork began to exceed the supply, fraudulent marks and signatures began to appear on the open market.

During the 16th century, imitators of Albrecht Dürer's style of printmaking added signatures to them to increase the value of their prints. In his engraving of the Virgin, Dürer added the inscription "Be cursed, plunderers and imitators of the work and talent of others".[1] Even extremely famous artists created forgeries. In 1496, Michelangelo created a sleeping Cupid figure and treated it with acidic earth to cause it to appear ancient. He then sold it to a dealer, Baldassare del Milanese, who in turn sold it to Cardinal Riario of San Giorgio who later learned of the fraud and demanded his money back. However, Michelangelo was permitted to keep his share of the money.[2][3]

The 20th-century art market has favored artists such as Salvador Dalí, Pablo Picasso, Klee and Matisse and works by these artists have commonly been targets of forgery. These forgeries are typically sold to art galleries and auction houses who cater to the tastes of art and antiquities collectors; at time of the occupation of France by German forces during World War II, the painting which fetched the highest price at Drouot, the main French auction house, was a fake Cézanne.[4]

Forgers

There are essentially three varieties of art forger. The person who actually creates the fraudulent piece, the person who discovers a piece and attempts to pass it off as something it is not, in order to increase the piece's value, and the third who discovers that a work is a fake, but sells it as an original anyway.[5][6]

Copies, replicas, reproductions and pastiches are often legitimate works, and the distinction between a legitimate reproduction and deliberate forgery is blurred. For example, Guy Hain used original molds to reproduce several of Auguste Rodin's sculptures. However, when Hain then signed the reproductions with the name of Rodin's original foundry, the works became deliberate forgeries.

Artists
  • Strand von Ste. Adresse, 1863, by Johan Barthold Jongkind.
  • Skating in Holland, 1890-1900, signed "Jongkind" in the lower left hand corner, but is actually a forgery by an unknown author.
  • Signatures from the two works shown to the left. Top: authentic Jongkind, bottom: signature on forgery.
Das Leben ist schön, sculpture by "Leonardo Rossi", a fake name often used for plagiarized bronzes.

An art forger must be at least somewhat proficient in the type of art he is trying to imitate. Many forgers were once fledgling artists who tried, unsuccessfully, to break into the market, eventually resorting to forgery. Sometimes, an original item is borrowed or stolen from the owner in order to create a copy. Forgers will then return the copy to the owner, keeping the original for himself. In 1799, a self-portrait by Albrecht Dürer which had hung in the Nuremberg Town Hall since the 16th century, was loaned to Abraham Wolfgang Küfner. The painter made a copy of the original and returned the copy in place of the original. The forgery was discovered in 1805, when the original came up for auction and was purchased for the royal collection.

Although many art forgers reproduce works solely for money, some have claimed that they have created forgeries to expose the credulity and snobbishness of the art world. Essentially the artists claim, usually after they have been caught, that they have performed only "hoaxes of exposure".

Some exposed forgers have later sold their reproductions honestly, by attributing them as copies, and some have actually gained enough notoriety to become famous in their own right. Forgeries painted by the late Elmyr de Hory, featured in the film F for Fake directed by Orson Welles, have become so valuable that forged de Horys have appeared on the market.

A peculiar case was that of the artist Han van Meegeren who became famous by creating "the finest Vermeer ever"[7] and exposing that feat eight years later in 1945. His own work became valuable as well, which in turn attracted other forgers. One of these forgers was his son Jacques van Meegeren who was in the unique position to write certificates stating that a particular piece of art that he was offering "was created by his father, Han van Meegeren".[8]

Forgers usually copy works by deceased artists, but a small number imitate living artists. In May 2004, Norwegian painter Kjell Nupen noticed that the Kristianstad gallery was selling unauthorized, signed copies of his work.

American art forger Ken Perenyi published a memoir in 2012 in which he detailed decades of his activities creating thousands of authentic-looking replicas of masters such as James Buttersworth, Martin Johnson Heade, and Charles Bird King, and selling the forgeries to famous auction houses such as Christie's and Sotheby's and wealthy private collectors.[9]

Dealers

Claims have surfaced recently, alleging that art dealers and auction houses have been overly eager, by accepting forgeries as genuine, and selling them quickly, to turn a profit. If a dealer finds the work is a forgery, he may quietly withdraw the piece and return it to its previous owner—giving the forger an opportunity to sell it elsewhere.[10]

Some forgers have created false paper trails relating to a piece, in order to make the work appear genuine. British art dealer John Drewe created false documents of provenance for works forged by his partner John Myatt, and even inserted pictures of forgeries into the archives of prominent art institutions.[11] In 2016, Eric Spoutz plead guilty to one count of wire fraud related to the sale of hundreds of falsely attributed artworks to American masters accompanied by forged provenance documents. Spoutz was sentenced to 41 months in federal prison and ordered to forfeit the $1.45 million he made from the scheme and pay $154,100 in restitution.[12]

Experts and institutions may also be reluctant to admit their own fallibility. Art historian Thomas Hoving estimates that various types of forged art comprise up to 40% of the art market,[5] though others find this estimate to be absurdly high.[13]

Methods of detection
Tests of this painting revealed that the purportedly ancient wormholes in the panel had been made with a drill (they were straight, not crooked) and that the Virgin's robe was painted using Prussian blue, a pigment not invented until the 18th century. It is thought that this painting was created in the 1920s by an unknown Italian forger.

The most obvious forgeries are revealed as clumsy copies of previous art. A forger may try to create a "new" work by combining the elements of more than one work. The forger may omit details typical to the artist they are trying to imitate, or add anachronisms, in an attempt to claim that the forged work is a slightly different copy, or a previous version of a more famous work. To detect the work of a skilled forger, investigators must rely on other methods.

Technique of examination

Often a thorough examination (sometimes referred to as Morellian Analysis)[14] of the piece is enough to determine authenticity. For example, a sculpture may have been created with obviously modern methods and tools. Some forgers have used artistic methods inconsistent with those of the original artists, such as incorrect characteristic brushwork, perspective, preferred themes or techniques, or have used colors that were not available during the artist's lifetime to create the painting. Some forgers have dipped pieces in chemicals to "age" them and some have even tried to imitate worm marks by drilling holes into objects (see image, right).

While attempting to authenticate artwork, experts will also determine the piece's provenance. If the item has no paper trail, it is more likely to be a forgery. Other techniques forgers use which might indicate that a painting is not authentic include:

  • Frames, either new or old, that have been altered in order to make forged paintings look more genuine.
  • To hide inconsistencies or manipulations, forgers will sometimes glue paper, either new or old, to a painting's back, or cut a forged painting from its original size.
  • Recently added labels or artist listings on unsigned works of art, unless these labels are as old as the art itself, should cause suspicion.
  • While art restorers legitimately use new stretcher bars when the old bars have worn, new stretcher bars on old canvases might be an indication that a forger is attempting to alter the painting's identity.
  • Old nail holes or mounting marks on the back of a piece might indicate that a painting has been removed from its frame, doctored and then replaced into either its original frame or different frame.
  • Signatures on paintings or graphics that look inconsistent with the art itself (either fresher, bolder, etc.).
  • Unsigned work that a dealer has "heard" is by a particular artist.

More recently, magnetic signatures, such as those used in the ink of bank notes, are becoming popular for authentication of artworks.[15]

Forensic authentication
Portrait of a Woman, attributed to Goya (1746-1828). X-ray images taken of this painting in 1954 revealed a portrait of another woman, circa 1790, beneath the surface. X-ray diffraction analysis revealed the presence of zinc white paint, invented after Goya's death. Further analysis revealed that the surface paint was modern and had been applied so as not to obscure the craquelure of the original. After analysis, the conservators left the work as you see it above, with portions of old and new visible, to illustrate the intricacies of art forgery, and the inherent difficulty of detecting it.

If examination of a piece fails to reveal whether it is authentic or forged, investigators may attempt to authenticate the object using some, or all, of the forensic methods below:

  • Carbon dating is used to measure the age of an object up to 10,000 years old.
  • "White Lead" dating is used to pinpoint the age of an object up to 1,600 years old.[16]
  • Conventional x-ray can be used to detect earlier work present under the surface of a painting (see image, right). Sometimes artists will legitimately re-use their own canvasses, but if the painting on top is supposed to be from the 17th century and the one underneath shows people in 19th-century dress, the scientist will assume the top painting is not authentic. Also x-rays can be used to view inside an object to determine if the object has been altered or repaired.
    • X-ray diffraction (the object bends x-rays) is used to analyze the components that make up the paint an artist used, and to detect pentimenti (see image, right).
    • X-ray fluorescence (bathing the object with radiation causes it to emit X-rays) which can reveal if the metals in a metal sculpture or the composition of pigments are too pure, or newer than their supposed age. This technique can also reveal the artist's (or forger's) fingerprints.
  • Ultraviolet fluorescence and infrared analysis are used to detect repairs or earlier painting present on canvasses.
  • Atomic Absorption Spectrophotometry (AAS) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) are used to detect anomalies in paintings and materials. If an element is present that the investigators know was not used historically in objects of this type, then the object is not authentic.
  • Pyrolysis–gas chromatography–mass spectrometry (Py-GC-MS) can be used to analyze the paint-binding medium. Similar to AAS and ICP-MS, if there are elements detected that were not used in the period, or not available in the region where the art is from, then the object is not authentic.[17]
  • Stable isotope analysis can be used to determine where the marble used in a sculpture was quarried.
  • Thermoluminescence (TL) is used to date pottery. TL is the light produced by heat; older pottery produces more TL when heated than a newer piece.[18]
  • A feature of genuine paintings sometimes used to detect forgery is craquelure.

Digital authentication

Statistical analysis of digital images of paintings is a new method that has recently been used to detect forgeries. Using a technique called wavelet decomposition, a picture is broken down into a collection of more basic images called sub-bands. These sub-bands are analyzed to determine textures, assigning a frequency to each sub-band. The broad strokes of a surface such as a blue sky would show up as mostly low frequency sub-bands whereas the fine strokes in blades of grass would produce high-frequency sub-bands.[19] A group of 13 drawings attributed to Pieter Brueghel the Elder was tested using the wavelet decomposition method. Five of the drawings were known to be imitations. The analysis was able to correctly identify the five forged paintings. The method was also used on the painting Virgin and Child with Saints, created in the studios of Pietro Perugino. Historians have long suspected that Perugino painted only a portion of the work. The wavelet decomposition method indicated that at least four different artists had worked on the painting.

Problems with authentication
A Young Woman Seated at the Virginals, by Johannes Vermeer, circa 1670-72

Art specialists with expertise in art authentication began to surface in the art world during the late 1850s. At that time they were usually historians or museum curators, writing books about paintings, sculpture, and other art forms. Communication among the different specialties was poor, and they often made mistakes when authenticating pieces. While many books and art catalogues were published prior to 1900, many were not widely circulated, and often did not contain information about contemporary artwork. In addition, specialists prior to the 1900s lacked many of the important technological means that experts use to authenticate art today. Traditionally, a work in an artist's "catalogue raisonné" has been key to confirming the authenticity, and thus value. Omission from an artist's catalogue raisonné indeed can prove fatal to any potential resale of a work, notwithstanding any proof the owner may offer to support authenticity.[20]

The fact that experts do not always agree on the authenticity of a particular item makes the matter of provenance more complex. Some artists have even accepted copies as their own work - Picasso once said that he "would sign a very good forgery". Camille Corot painted more than 700 works, but also signed copies made by others in his name, because he felt honored to be copied. Occasionally work that has previously been declared a forgery is later accepted as genuine; Vermeer's Young Woman Seated at the Virginals[21] had been regarded as a forgery from 1947 until March 2004, when it was finally declared genuine, although some experts still disagree.[22]

At times restoration of a piece is so extensive that the original is essentially replaced when new materials are used to supplement older ones. An art restorer may also add or remove details on a painting, in an attempt to make the painting more saleable on the contemporary art market. This, however, is not a modern phenomenon - historical painters often "retouched" other artist's works by repainting some of the background or details.

Many forgeries still escape detection; Han van Meegeren, possibly the most famous forger of the 20th century, used historical canvasses for his Vermeer forgeries and created his own pigments to ensure that they were authentic. He confessed to creating the forgeries only after he was charged with treason, an offense which carried the death penalty. So masterful were his forgeries that van Meegeren was forced to create another "Vermeer" while under police guard, to prove himself innocent of the treason charges.

A recent, thought-provoking instance of potential art forgery involves the Getty kouros, the authenticity of which has not been resolved. The Getty Kouros was offered, along with seven other pieces, to The J. Paul Getty Museum in Malibu, California, in the spring of 1983. For the next 12 years art historians, conservators, and archaeologists studied the Kouros, scientific tests were performed and showed that the surface could not have been created artificially. However, when several of the other pieces offered with the Kouros were shown to be forgeries, its authenticity was again questioned. In May 1992, the Kouros was displayed in Athens, Greece, at an international conference, called to determine its authenticity. The conference failed to solve the problem; while most art historians and archeologists denounced it, the scientists present believed the statue to be authentic. To this day, the Getty Kouros' authenticity remains a mystery and the statue is displayed with the date: "Greek, 530 B.C. or modern forgery".[23]

To combat these problems some initiatives are being developed.

The Authentication in Art Foundation. Established in 2012 by experts from different fields involved with the authenticity of art. The aim of the foundation is to bring together experts from different specialities to combat art forgery. Among its members are noted experts such as David Bomford, Martin Kemp, and Mauricio Seracini.[24]

The Cultural Heritage Science Open Source – CHSOS, founded by Antonino Cosentino. They “provide practical methods for the scientific examination of fine arts, historical and archaeological objects”.[25]

The International Foundation for Art research – IFAR. Established 1969, it is a “not-for-profit educational and research organization dedicated to integrity in the visual arts. IFAR offers impartial and authoritative information on authenticity, ownership, theft, and other artistic, legal, and ethical issues concerning art objects. IFAR serves as a bridge between the public, and the scholarly and commercial art communities”.[26]

Institute of Appraisal and Authentication of works of Art – i3A. A not-for-profit organization that gathers professionals of different fields, providing equipment and preparing procedure manuals aligned with international techniques, in the search of further knowledge on the production of Brazilian artists.[27]

Photographic forgery

Recently, photographs have become the target of forgers, and as the market value of these works increase, so will forgery continue. Following their deaths, works by Man Ray and Ansel Adams became frequent targets of forgery. The detection of forged photography is particularly difficult, as experts must be able to tell the difference between originals and reprints.

In the case of photographer Man Ray[28] print production was often poorly managed during his lifetime, and many of his negatives were stolen by people who had access to his studio. The possession of the photo-negatives would allow a forger to print an unlimited number of fake prints, which he could then pass off as original. Fake prints would be nearly indistinguishable from originals, if the same photographic paper was used. Since unused photographic paper has a short (2–5 years) useful life, and the composition of photographic paper was frequently changed, the fakes would have had to be produced not long after the originals.

Further complicating matters, following Man Ray's death, control of printing copyrights fell to his widow, Juliet Man Ray, and her brother, who approved production of a large number of prints that Man Ray himself had earlier rejected. While these reprints are of limited value, the originals, printed during Man Ray's lifetime, have skyrocketed in value, leading many forgers to alter the reprints, so that they appear to be original.

In the United States, criminal prosecutions of art forgers are possible under federal, state and/or local laws.

For example, federal prosecutions have been successful using generalized criminal statutes, including the Racketeer Influenced and Corrupt Organizations Act ("RICO"). A successful RICO charge was brought against a family which had sold counterfeit prints purportedly by Chagall, Miró, and Dalí. The defendants were also found guilty of other federal crimes including conspiracy to defraud, money laundering, and postal fraud.[29] Federal prosecutors are also able to prosecute forgers using the federal wire fraud or mail fraud statutes where the defendants used such communications.

However, federal criminal prosecutions against art forgers are seldom brought due in part to high evidentiary burdens and competing law enforcement priorities. For example, internet art frauds now appear in the federal courts' rulings that one may study in the PACER court records. Some frauds are done on the internet on a popular auction websites. Traces are readily available to see the full extent of the frauds from a forensic standpoint or even basic due diligence of professionals who may research matters including sources of PACER / enforcing authority records and on the internet.

Prosecution is also possible under state criminal laws, such as prohibitions against criminal fraud, or against the simulation of personal signatures. However, in order to trigger criminal liability under states' laws, the government must prove that the defendant had intent to defraud. The evidentiary burden, as in all criminal prosecutions, is high; proof "beyond a reasonable doubt" is required.[30]

Art forgery may also be subject to civil sanctions. The Federal Trade Commission, for example, has used the FTC Act to combat an array of unfair trade practices in the art market. An FTC Act case was successfully brought against a purveyor of fake Dalí prints in FTC v. Magui Publishers, Inc., who was permanently enjoined from fraudulent activity and ordered to restore their illegal profits.[31][32] In that case, the defendant had collected millions of dollars from his sale of forged prints.

At the state level, art forgery may constitute a species of fraud, material misrepresentation, or breach of contract. The Uniform Commercial Code provides contractually-based relief to duped buyers based on warranties of authenticity.[33] The predominant civil theory to address art forgery remains civil fraud. When substantiating a civil fraud claim, the plaintiff is generally required to prove that the defendant falsely represented a material fact, that this representation was made with intent to deceive, that the plaintiff reasonably relied on the representation, and the representation resulted in damages to the plaintiff.

Some legal experts have recommended strengthening existing intellectual property laws to address the growing problem of art forgeries proliferating in the mass market.[34] They argue that the existing legal regime is ineffective in combating this growing trend.

Art crime education

In summer 2009, ARCA - the Association for Research into Crimes against Art - began offering the first postgraduate program dedicated to the study of art crime. The Postgraduate Certificate Program in Art Crime and Cultural Heritage Protection includes coursework that discusses art fakes and forgery. Education on art crime also requires research efforts from the scholarly community through analysis on fake and forged artworks.[35]

Fictional art forgery

Film

TV series
  • White Collar is a series about Neal Caffrey, a convicted art forger who starts working with the FBI.
  • Lovejoy, about a roguish art dealer with a reputation for being able to spot forgeries

Literature
  • Tom Ripley is involved in an artwork forgery scheme in several of Patricia Highsmith's crime novels, most notably Ripley Under Ground (1970), in which he is confronted by a collector who correctly suspects that the paintings sold by Tom are forgeries. The novel was adapted to film in 2005, and the 1977 film The American Friend is also partially based on the novel.
  • In Robertson Davies' 1985 novel What's Bred in the Bone, protagonist Francis Cornish studies with an accomplished art forger and is inspired to produce two paintings which are subsequently accepted by experts as original 16th-century artworks.
  • In Russell H. Greenan's novel It Happened in Boston?, the protagonist is a madman, a serial killer, and an astonishingly good artist in the Old Master style, fooled into creating a painting that becomes accepted as a da Vinci.
  • The Art Thief, an international best-selling novel by professor of art history Noah Charney, features a series of forgeries and art heists.
  • In Clive Barker's 1991 novel Imajica, the protagonist, John Furie Zacharias, known as "Gentle," makes his living as a master art forger.
  • William Gaddis' acclaimed 1955 novel The Recognitions centers on the life of an art forger and prodigal Calvinist named Wyatt Gwyon and his struggle to find meaning within art. The novel itself discusses the process and history of forgery in depth as well as the possible artistic merit of forged paintings.
  • David Mitchell's novel Ghostwritten features a section set in the State Hermitage Museum in Russia, and follows a crime syndicate that steals artwork from the museum to sell on the black market, replacing the originals with high quality forgeries.
  • The plot of Dominic Smith's novel The Last Painting of Sara de Vos revolves around a forged work by the fictional 17th century Dutch painter.

See also
Main article: Outline of forgery

Notable forgeries

Known art forgers and dealers of forged art

References
  1. Forgeries, a Long History Archived 2007-08-04 at the Wayback Machine, Adrian Darmon
  2. Sheila Gibson Stoodley (August 2008). "Misadventures in Collecting". Arts and Antiques. Archived from the original on 13 April 2015.(Subscription required.)
  3. "Michelangelo's Cupid". Museum of Hoaxes. Retrieved 3 January 2010.
  4. Kim Oosterlinck, 2009. "The Price of Degenerate Art," Working Papers CEB 09-031.RS, ULB -- Universite Libre de Bruxelles
  5. False Impressions: The Hunt for Big-Time Art Fakes, Thomas Hoving, Simon & Schuster, 1996.
  6. "List of Unmasked forgers on the Authentication in Art Foundation Website".
  7. Kilbracken, Van Meegeren: Master Forger New York 1967
  8. Kreuger, Frededrik H. (2003). "A New Vermeer". Rijswijk. Archived from the original on 29 August 2010.
  9. Perenyi, Ken (2012). Caveat Emptor: The Secret Life of an American Art Forger. New York: Pegasus Books. ISBN 978-1605983608.
  10. "Who Wins and Who Loses When Art is Stolen or Forged?" (PDF). aic.gov.au.
  11. "Art libraries as a source of false provenance" (PDF). ifla.org.
  12. "Forging Papers to Sell Fake Art," Federal Bureau of Investigation (press release), 6 April 2017
  13. Fakers, Forgers And Frauds (interview with Anthony Amore)
  14. Megan McHugh, Grace DiFrancesco, Joe Gencarelli, Cai Debenham, "Art Forgeries and Their Detection".
  15. "Art forgery to be foiled by magnetic signatures".
  16. "Detecting Art Forgeries" (PDF). amath.colorado.edu. Archived from the original (PDF) on 17 July 2011. Retrieved 21 April 2006.
  17. Ragai, Jehane (2013). "The Scientific Detection of Forgery in Paintings*" (PDF). Proceedings of the American Philosophical Society. Archived from the original (PDF) on 14 February 2014. Retrieved 6 May 2016.
  18. "Thermoluminescence". mnsu.edu. Archived from the original on 9 July 2006. Retrieved 22 July 2006.
  19. Erica Klarreich (2004). "Con artists. Scanning program can discern true art". Science News 166 (22): 340.
  20. Art Law Practice, Sheppard, Mullin, Richter & Hampton LLP (16 December 2011). "Cherchez les Catalogues Raisonné". The National Law Review. Retrieved 17 December 2011.
  21. "A YOUNG WOMAN SEATED AT THE VIRGINALS by Johannes Vermeer". Essentialvermeer.com. Retrieved 28 April 2012.
  22. "Young Woman Seated at the Virginals". Essentialvermeer.com. Retrieved 28 April 2012.
  23. "Authentic or Not?". orpheus.ucsd.edu. Archived from the original on 15 May 2006. Retrieved 21 April 2006.
  24. "The Authentication in Art Foundation".
  25. "About CHSOS". Cultural Heritage Science Open Source. Retrieved 13 November 2019.
  26. "International Foundation for Art Research (IFAR)-About IFAR". www.ifar.org. Retrieved 13 November 2019.
  27. "i3a". i3a.org.br. Retrieved 13 November 2019.
  28. "Major Man Ray Scandal in Paris". artcult.com. Archived from the original on 24 June 2006. Retrieved 24 July 2006.
  29. United States v. Amiel, 889 F. Supp. 615 (E.D.N.Y. 1995).
  30. Dripps, Donald (October 1987). "The Constitutional Status of the Reasonable Doubt Rule". California Law Review. 75 (5): 1665–1718. doi:10.2307/3480489. JSTOR 3480489. Retrieved 24 July 2017.
  31. FTC v. Magui Publishers, Inc., Civ. No. 89-3818RSWL(GX), 1991 U.S. Dist. LEXIS 20452 (C.D. Cal. 15 March 1991).
  32. Lerner, Ralph E.; Bresler, Judith (1998). Discussion of case. ISBN 9780872241084. Retrieved 28 April 2012.
  33. U.C.C. § 2-313.
  34. Gioconda, Joseph C. (14 October 2008). "Creative Approaches to Fighting Art Forgery". New York Law Journal. Retrieved 19 December 2010.
  35. Vuong, Quan-Hoang; Ho, Manh-Tung; Nguyen, Hong-Kong; Vuong, Thu-Trang; Tran, Kien; Ho, Manh (9 October 2018). ""Paintings Can Be Forged, But Not Feeling": Vietnamese Art—Market, Fraud, and Value". Arts. 7 (4): 62. doi:10.3390/arts7040062.
  36. "DocsOnline - Documentary film library". Docsonline.tv. Retrieved 28 April 2012.
  37. "Interview with Corneille in a documentary film The Forgery (Arjanne van der Laan, 2001".

Further reading

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