David; Klanica, Zdeněk. Great Moravia: The Archaeology of Ninth-Century Czechoslovakia. The Trustees of the British Museum. 1982. ISBN 0-7141-0520-1. Berend...
(April 1968). Control Committee of the Communist Party ofCzechoslovakia, "Action Plan of the Communist Party ofCzechoslovakia (Prague, April 1968)" in Dubcek's...
"Communiqué on the Meeting of Representatives of the Governments and the Communist and Workers' Parties of Bulgaria, Czechoslovakia, Hungary, Romania and the...