sentences:  On the other hand, at the International Conference on the History of Cartography in July 2009, Larsen revealed that his team had continued their investigation after publishing their original report, and he told the press that "All the tests that we have done over the past five years — on the materials and other aspects — do not show any signs of forgery".The formal report of his presentation shows that his work ignores rather than contradicts earlier studies.For example, he experimented only with artificial wormholes, and did not follow up the observation made at the 1966 Conference, that live bookworms were a known tool of the fake antiquities trade.