TY  - JOUR
AU  - W. Mlak
TI  - On semi-groups of contractions in Hilbert spaces
JO  - Studia Mathematica
PY  - 1965
SP  - 263
EP  - 272
VL  - 26
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm-26-3-263-272/
DO  - 10.4064/sm-26-3-263-272
LA  - en
ID  - 10_4064_sm_26_3_263_272
ER  -