Precan, V. (1983). Human rights in Czechoslovakia: A documentation, september 1981 - december 1982 ; based on reports by human rights groups, (Charter 77, VONS), court records, official statements of the Czechoslovak government and other documents. Paris.

Precan, Vilem. Human Rights in Czechoslovakia: A Documentation, September 1981 - December 1982 ; Based On Reports By Human Rights Groups, (Charter 77, VONS), Court Records, Official Statements of the Czechoslovak Government and Other Documents. Paris, 1983.

Precan, Vilem. Human Rights in Czechoslovakia: A Documentation, September 1981 - December 1982 ; Based On Reports By Human Rights Groups, (Charter 77, VONS), Court Records, Official Statements of the Czechoslovak Government and Other Documents. Paris, 1983.