TY  - JOUR
AU  - B. Choczewski
TI  - On differentiable solutions of a functional equation
JO  - Annales Polonici Mathematici
PY  - 1963
SP  - 133
EP  - 138
VL  - 13
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-13-2-133-138/
DO  - 10.4064/ap-13-2-133-138
LA  - en
ID  - 10_4064_ap_13_2_133_138
ER  -