Joseph Benatov: Debating the Fate of Bulgarian Jews during World War II in John-Paul Himka, Beata Michlic: Bringing the Dark Past to Light: The Reception of the Holocaust in postcommunist Europe, Journal of Baltic Studies 39, no. 4, 2008, ISBN 978-0-8032-2544-2, online bei books.google.de. Abgerufen am 28. Februar 2020.
Spas T. Raikin: Rebel with a Just Cause: A Political Journey Against the Winds of the 20th Century, Vol. II, Pensoft, Sofia-Moscow, 2001, ISBN 954-642-130-8, S. 130, online bei books.google.de. Abgerufen am 28. Februar 2020.