TY - JOUR AU - Ryotaro Sato TI - On the ratio maximal functions for an ergodic flow JO - Studia Mathematica PY - 1984 SP - 129 EP - 139 VL - 80 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-80-2-129-139/ DO - 10.4064/sm-80-2-129-139 LA - en ID - 10_4064_sm_80_2_129_139 ER -