%0 Journal Article %A H. Bercovici %A B. Chevreau %A C. Foias %T Definition Theory and Systems of Simultaneous Equations in the Perdual of an Operator Algebra. II. %J Mathematische Zeitschrift %D 1984 %P 97-104 %V 187 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1984__187_173475/ %G en %F MZ_1984__187_173475