TY  - JOUR
AU  - J. Kisyński
TI  - On operator valued solutions of d'Alembert's functional equation, II
JO  - Studia Mathematica
PY  - 1972
SP  - 43
EP  - 66
VL  - 42
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm-42-1-43-66/
DO  - 10.4064/sm-42-1-43-66
LA  - en
ID  - 10_4064_sm_42_1_43_66
ER  -