TY  - JOUR
AU  - Z. Krzeszowiak-Dybiec
TI  - Existence of differentiable solutions of a system of functional equations of first order
JO  - Annales Polonici Mathematici
PY  - 1980
SP  - 119
EP  - 129
VL  - 37
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-37-2-119-129/
DO  - 10.4064/ap-37-2-119-129
LA  - en
ID  - 10_4064_ap_37_2_119_129
ER  -