MathSciNet bibliographic data MR928215 46L05 (46L35 46L40) Powers, Robert T. An index theory for semigroups of $^*$$^*$-endomorphisms of ${\scr B}({\scr H})$${\scr B}({\scr H})$ and type ${\rm II}_1$${\rm II}_1$ factors. Canad. J. Math. 40 (1988), no. 1, 86–114. Article

For users without a MathSciNet license , Relay Station allows linking from MR numbers in online mathematical literature directly to electronic journals and original articles. Subscribers receive the added value of full MathSciNet reviews.