TY - JOUR AU - R. Sato TI - An ergodic theorem without invariant measure JO - Colloquium Mathematicum PY - 1990 SP - 59 EP - 62 VL - 59 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-59-1-59-62/ DO - 10.4064/cm-59-1-59-62 LA - en ID - 10_4064_cm_59_1_59_62 ER -