"One expert describes the forgeries as 'gold standard'"

The Guardian reports that "panic is spreading through the art world following the discovery of forgeries among major 20th-century paintings sold in recent years by leading auctioneers and dealers worldwide, including Christie's in London."

Art Theft Central: "Unfortunately, this art forgery case underscores the need for art connoisseurship and authentication to utilize the current scientific technologies to confirm a work's provenance and history. Otherwise, buyers and sellers as well as art experts and historians will continue to play what can at times be comparable to a game of Russian roulette."