Philadelphia Inquirer (15 March 2006) A7. ↑ Lunev, pages 29-30 ↑ Alexander Kouzminov Biological Espionage: Special Operations of the Soviet and Russian Foreign Intelligence Services in the West, Greenhill Books, 2006, ISBN 1-85367-646-2 "Archived copy". Archived from the original on 2005-04-25. Retrieved 2007-12-05. ↑ Kouzminov, pages 35-36.