December 6, 1984: Crackdown in Yugoslavia (letter)
March 5, 1981: The 'Praxis' Philosophers (letter)
December 4, 1980: The New Plight of the Praxis Professors (letter)
May 29, 1975: Plight of the Kurds (letter)
February 6, 1975: Letter to Tito (letter)
February 7, 1974: The Repression at Belgrade University
March 8, 1973: Crackdown in Yugoslavia (letter)