TY  - JOUR
AU  - Dogan Çömez
TI  - Linear modulus of a multidimensional semigroup of $L_1$-contractions and a differentiation theorem
JO  - Colloquium Mathematicum
PY  - 1989
SP  - 103
EP  - 115
VL  - 57
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-57-1-103-115/
DO  - 10.4064/cm-57-1-103-115
LA  - en
ID  - 10_4064_cm_57_1_103_115
ER  -