↑ Vollert, Jochen (2005). Tankograd Militar Fahrzeug - Special No. 2003 Soviet Special - KV-1 Soviet Heavy Tanks of WWII - Late Variants. Tankograd Publishing. p. 59.
↑ Glantz, David M. (1995). When Titans Clash: How the Red Army Stopped Hitler. University Press of Kansas. p. 36. ISBN9780700608997.
↑ Ogorkiewicz, Richard (2015). Tanks: 100 years of evolution. Osprey. p. 94.
George Forty & Jack Livesey,the World Encyclopedia of Tanks,Anness,2006
