Piotr Kapitza
1988 / Letters from Kapitza to His Mother, 1921-27 / J. W. Boag ; D. Shoenberg / Notes and Records 42 (1988) p. 205 [doi]
1991 / Piotr Kapitza and Stalin's Government: A Study in Moral Choice / Aleksei Kozhevnikov / Historical Studies in the Physical and Biological Sciences 22 (1991) p. 131 [doi]