A key influence on the movement was the circulation of the "Book of Veles" among Russian and Ukrainian emigrees. This text was brought to the public by the Russian Yuri Mirolyubov (1892–1970), who claimed that it had been discovered by a friend of his, Fodor Arturovich Isenbek, while serving as a White Army officer during the Russian Civil War. Mirolyubov alleged that the original text had been etched on wooden boards, but that these had been lost during the Second World War, leaving only his own copies. It is probable that the "Book of Veles" was a literary composition produced by Mirolyubov himself. In following decades the work would have caused a sensation, with many emigrees regarding it as a genuine tenth-century text. Another supporter of the book was the Ukrainian entomologist Sergey Paramonov (also known as Sergey Lesnoy; 1898–1968).