- Andrzej Blikle, editor, Mathematical Foundations of Computer Science, 3rd Symposium at Jadwisin near Warsaw, June 17-22, 1974, Proceedings. Volume 28 of Lecture Notes in Computer Science, Springer, 1975.
- Jirí Becvár, editor, Mathematical Foundations of Computer Science 1975, 4th Symposium, Mariánské Lázne, Czechoslovakia, September 1-5, 1975, Proceedings. Volume 32 of Lecture Notes in Computer Science, Springer, 1975.