%0 Journal Article %A Wong, James C. S. %T Fixed Point Theorems for Measurable Semigroups of Operations %J Canadian journal of mathematics %D 1992 %P 652-664 %V 44 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1992-039-4/ %R 10.4153/CJM-1992-039-4 %F 10_4153_CJM_1992_039_4