%0 Journal Article %A Sh. M. Usmanov %T Operator-valued weights on real $W^*$-algebras and reversible $JW$-algebras %J Sbornik. Mathematics %D 1999 %P 1505-1522 %V 190 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1999_190_10_a5/ %G en %F SM_1999_190_10_a5