%0 Journal Article %A Robertson, Guyan %T States which have a trace-like property relative to a C*-subalgebra of B(H) %J Glasgow mathematical journal %D 1976 %P 158-160 %V 17 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500002913/ %R 10.1017/S0017089500002913 %F 10_1017_S0017089500002913