Chen, Liping Geometric singular perturbation theory for ordinary differential equations with multifrequency. (Chinese. English summary) Zbl 0962.34042 Acta Math. Sci. (Chin. Ed.) 20, No. 3, 329-335 (2000). MSC: 34E15 34A26 34C29 PDFBibTeX XMLCite \textit{L. Chen}, Acta Math. Sci. (Chin. Ed.) 20, No. 3, 329--335 (2000; Zbl 0962.34042)
Chen, Liping Character as solitary wave in a certain one-dimensional array. (Chinese. English summary) Zbl 0976.34044 Acta Math. Sci. (Chin. Ed.) 19, No. 4, 361-367 (1999). MSC: 34D10 34C37 PDFBibTeX XMLCite \textit{L. Chen}, Acta Math. Sci. (Chin. Ed.) 19, No. 4, 361--367 (1999; Zbl 0976.34044)