TY - JOUR AU - Stampfli, J. G. TI - Adjoint Abelian Operators on Banach Space JO - Canadian journal of mathematics PY - 1969 SP - 505 EP - 512 VL - 21 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-058-4/ DO - 10.4153/CJM-1969-058-4 ID - 10_4153_CJM_1969_058_4 ER -