which bidded successfully for the assets at Sunday's auction in the city of Tver, were linked to Surgutneftegaz.One of them, Valentina Davletgareeva, was part-owner of a subsidiary of Surgutneftegaz, and the other, Igor Minibayev, was a director of the same company, it said.Given the presence of the two at the auction, it is logical to suppose that the company which put up the US$1.7 billion bond