%0 Journal Article %A Ryotaro Sato %T Ratio limit theorems and applications to ergodic theory %J Studia Mathematica %D 1979 %P 237-245 %V 66 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-66-3-237-245/ %R 10.4064/sm-66-3-237-245 %G en %F 10_4064_sm_66_3_237_245