Coba jelasin Lihat pula dari Nahum Eitingon dong

Katamidze, Vyacheslav 'Slava': Loyal Comrades, Ruthless Killers: The Secret Services of the USSR 1917–1991, Lewis International, Inc.; 2003; ; pp. 74–85, 91, 99, 103, 115, 126–129, 133, 136, 145–146, 155–156