TY - JOUR AU - Ryotaro Sato TI - A general ratio ergodic theorem for Abel sums JO - Studia Mathematica PY - 1973 SP - 223 EP - 233 VL - 46 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-46-3-223-233/ DO - 10.4064/sm-46-3-223-233 LA - en ID - 10_4064_sm_46_3_223_233 ER -