Venelin K. Evtimov. Bases of Paths in Correctness Proofs. In 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, pages 359-360, Springer, 1974.
Abstract is missing.