edited by W.C. Sweet ... [et al.] ; International Geological Correlation Programme, Project 203: Permo-Triassic Events of east Tethys Region and Their Intercontinental CorrelationCambridge University Pressc1992
presented on a symposium "Permian of the West Carpathians" ; organized by Dionýz Štúr Institute of Geology in Bratislava on August 26-September 2, 1979 ; compiled by Jozef Vozár and Anna VozárováGeologický ústav Dionýza Štúra1980