%0 Journal Article %A Price, Geoffrey L. %T Shifts on Type II 1 Factors %J Canadian journal of mathematics %D 1987 %P 492-511 %V 39 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1987-021-2/ %R 10.4153/CJM-1987-021-2 %F 10_4153_CJM_1987_021_2