%0 Journal Article
%A Hasegawa, Shigeru
%A Sato, Ryotaro
%T On a $d$-parameter ergodic theorem for continuous semigroups of operators satisfying norm conditions
%J Commentationes Mathematicae Universitatis Carolinae
%D 1997
%P 453-462
%V 38
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1997__38_3_a2/
%G en
%F CMUC_1997__38_3_a2