TY  - JOUR
AU  - J. Kisyński
TI  - On cosine operator functions and one-parameter groups of operators
JO  - Studia Mathematica
PY  - 1972
SP  - 93
EP  - 105
VL  - 44
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm-44-1-93-105/
DO  - 10.4064/sm-44-1-93-105
LA  - en
ID  - 10_4064_sm_44_1_93_105
ER  -