Jurgensen, H., et al (eds) Semigroups theory & applications proceedings of a conference held in oberwolfach, FRG, feb 23-mar 1, 1986 Ed by H. Jurgensen, et al - Berlin Springer 1988 - x 416 - Lecture notes in mathematics 1320 . ISBN: 3540193472 Dewey Class. No.: 5.06 / JURG