The Prague Spring and the Warsaw pact invasion of Czechoslovakia in 1968

TŮMA, O. Reforms in the Communist Party. The Prague Spring and apprehension about a Soviet invasion. In: BISCHOF, G., KARNER, S., RUGGENTHALER, P., eds. The Prague Spring and the Warsaw pact invasion of Czechoslovakia in 1968. Lanham: Lexington Books, 2010, s. 61-74. The Harvard Cold War studies book series. ISBN 978-0-7391-4304-9.