Llibre, Jaume; Ordóñez, Manuel; Ponce, Enrique On the existence and uniqueness of limit cycles in planar continuous piecewise linear systems without symmetry. (English) Zbl 1293.34047 Nonlinear Anal., Real World Appl. 14, No. 5, 2002-2012 (2013). MSC: 34C05 PDFBibTeX XMLCite \textit{J. Llibre} et al., Nonlinear Anal., Real World Appl. 14, No. 5, 2002--2012 (2013; Zbl 1293.34047) Full Text: DOI Link
Bratus, Alexander S.; Fimmel, E.; Todorov, Yordan; Semenov, Y. S.; Nürnberg, F. On strategies on a mathematical model for leukemia therapy. (English) Zbl 1239.49051 Nonlinear Anal., Real World Appl. 13, No. 3, 1044-1059 (2012). MSC: 49N90 92C60 34C60 92C50 PDFBibTeX XMLCite \textit{A. S. Bratus} et al., Nonlinear Anal., Real World Appl. 13, No. 3, 1044--1059 (2012; Zbl 1239.49051) Full Text: DOI