Czerwik, S. On the differentiability of solutions of a functional equation with respect to a parameter. (English) Zbl 0221.39003 Ann. Pol. Math. 24, 209-217 (1971). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document MSC: 39B22 Functional equations for real functions PDFBibTeX XMLCite \textit{S. Czerwik}, Ann. Pol. Math. 24, 209--217 (1971; Zbl 0221.39003) Full Text: DOI