Denkowski, Zdzislaw On the existence and uniqueness of periodic solutions for difference equations of second order. (English) Zbl 0256.39001 Ann. Pol. Math. 27, 265-277 (1973). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 39A10 Additive difference equations 34A45 Theoretical approximation of solutions to ordinary differential equations PDFBibTeX XMLCite \textit{Z. Denkowski}, Ann. Pol. Math. 27, 265--277 (1973; Zbl 0256.39001) Full Text: DOI