TY  - JOUR
AU  - Hasegawa, Shigeru
AU  - Sato, Ryotaro
TI  - On a $d$-parameter ergodic theorem for continuous semigroups of operators satisfying norm conditions
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 1997
SP  - 453
EP  - 462
VL  - 38
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMUC_1997__38_3_a2/
LA  - en
ID  - CMUC_1997__38_3_a2
ER  -