Cai, Jianping; Yang, Cuihong; Li, Yiping Pendulum with linear damping and variable length. (English) Zbl 1088.70012 Appl. Math. Mech., Engl. Ed. 25, No. 11, 1271-1276 (2004). MSC: 70K40 70K70 PDFBibTeX XMLCite \textit{J. Cai} et al., Appl. Math. Mech., Engl. Ed. 25, No. 11, 1271--1276 (2004; Zbl 1088.70012) Full Text: DOI
Cai, Jianping; Wu, Xiaofeng; Li, Y. P. Comparison of multiple scales and KBM methods for strongly nonlinear oscillators with slowly varying parameters. (English) Zbl 1073.70019 Mech. Res. Commun. 31, No. 5, 519-524 (2004). MSC: 70K70 70K60 PDFBibTeX XMLCite \textit{J. Cai} et al., Mech. Res. Commun. 31, No. 5, 519--524 (2004; Zbl 1073.70019) Full Text: DOI