Wójcik, Klaudiusz Periodic points of the planar area preserving Poincaré map inside isolating segment. (English) Zbl 1373.37044 J. Math. Anal. Appl. 455, No. 2, 905-922 (2017). MSC: 37B30 34C25 37J45 PDFBibTeX XMLCite \textit{K. Wójcik}, J. Math. Anal. Appl. 455, No. 2, 905--922 (2017; Zbl 1373.37044) Full Text: DOI
Wójcik, Klaudiusz Remark on complicated dynamics of some planar system. (English) Zbl 1119.34325 J. Math. Anal. Appl. 271, No. 1, 257-266 (2002). MSC: 34C28 34C37 37B30 PDFBibTeX XMLCite \textit{K. Wójcik}, J. Math. Anal. Appl. 271, No. 1, 257--266 (2002; Zbl 1119.34325) Full Text: DOI