Quantum Probability and Applications II: Proceedings of a Workshop held in Heidelberg, West Germany, October 1-5, 1984

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

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