Existence of differentiable solutions of a system of functional equations of first order

Wydawnictwa / Czasopisma IMPAN / Annales Polonici Mathematici / Wszystkie zeszyty

Z. Krzeszowiak-Dybiec Annales Polonici Mathematici 37 (1980), 119-129 DOI: 10.4064/ap-37-2-119-129