Kinnear, James & Sewell, Stephen: 2B1 "Oka" (Obiekt-273)Soviet T-10 Heavy Tank and Variants. 29.6.2017. Bloomsbury Publishing. Viitattu 21.7.2018. (englanniksi)
militaryfactory.com
2B1 OkaArmored Fighting Vehicles. Military Factory. Viitattu 21.7.2018. (englanniksi)