Kotelnokov B.P., 'Using Anglo-American Aviation Equipment in USSR during WWII and its impact on Soviet Aviation Development', July 30, 1993 report reprinted in "Iz Istorii Aviatsii i Kosmonavtiki', IIET RAN, Moscow, 1994, Issue 65, p. 58. http://www.aviation.ru/articles/land-lease.html#b8 を参照