TY - JOUR AU - Ryotaro Sato TI - On local ergodic theorems for positive semigroups JO - Studia Mathematica PY - 1978 SP - 45 EP - 55 VL - 63 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-63-1-45-55/ DO - 10.4064/sm-63-1-45-55 LA - en ID - 10_4064_sm_63_1_45_55 ER -