%0 Journal Article %A Stampfli, J. G. %T Adjoint Abelian Operators on Banach Space %J Canadian journal of mathematics %D 1969 %P 505-512 %V 21 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-058-4/ %R 10.4153/CJM-1969-058-4 %F 10_4153_CJM_1969_058_4