1988
Jan Kisyński. On jumps of a certain Markov process. In Maciej Skwarczyński and Tomasz Mazur, Classical analysis. Proceedings of the International Symposium held at Kazimierz Dolny, Prace Matematyczno-Fizyczne, pages 7–22. K. Pułaski Higher College of Engineering, Radom, Poland, 1988.