Quantum probability and applications III proceedings of a conference held in Oberwolfach, FRG, January 25-31, 1987 / L. Accardi, W. von Waldenfels (eds.). - Accardi, L. (Luigi), 1947-; Waldenfels, W. von (Wilhelm), 1932- (Lecture notes in mathematics (Springer-Verlag) ;, 1988)