%0 Journal Article %A Takeshi Yoshimoto %T Inequalities for product operators and vector valued ergodic theorems %J Studia Mathematica %D 1982 %P 95-114 %V 73 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-73-2-95-114/ %R 10.4064/sm-73-2-95-114 %G en %F 10_4064_sm_73_2_95_114