7. Provaznik, J., The Politics of Retrenchment, in Problems of Communism, 1969, Vol. 18, No. 4-5, pp.2-16
8. Sik, O., The Economic Impact of Stalinism, in Problems of Communism, 1971, Vol. 20, No. 3, pp.1-10
9. Simons, Th.W., Eastern Europe in the Postwar World, (2nd. ed., London: Macmillan, 1993)
10. Svitak, I., The Czechoslovak Experiment: 1968-1969 (New York and London: Columbia University Press, 1971)
11. Tigrid, P., Why Dubcek Fell (London: Macdonald, 1971)
12. White, St., Batt, J. and Lewis, P.J. (eds.), Developments in East European Politics (London: Macmillan, 1993)
