%0 Journal Article %A Rudol, K. %T The spectrum of orthogonal sums of subnormal pairs %J Glasgow mathematical journal %D 1988 %P 11-15 %V 30 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500006984/ %R 10.1017/S0017089500006984 %F 10_1017_S0017089500006984