https://www.warhistoryonline.com/cold-war/cold-war-soviet-self-propelled-aa-guns.html
Mass and Mobility - 7 Soviet Cold War Self-Propelled Anti-Aircraft Weapons | War History Online
Jun 26, 2018 - To counter the helicopters and planes of both current and anticipated enemies, the Soviet military planners of the Cold War built their air defense forces
self propelled anti aircraft