Quantum Probability and Applications V: Proceedings of the Fourth Workshop, held in Heidelberg, FRG, Sept. 26-30, 1988

Quantum Probability and Applications III: Proceedings of a Conference held in Oberwolfach, FRG, January 25-31, 1987

Quantum Probability and Applications IV: Proceedings of the Year of Quantum Probability, held at the University of Rome II, Italy, 1987