Li, Jibin; Liu, Zhengrong Chaotic behavior in planar quadratic Hamiltonian system with periodic perturbation. (English) Zbl 0586.70016 Kexue Tongbao, Foreign Lang. Ed. 30, 1285-1291 (1985). MSC: 70K40 70H05 37J99 37D45 PDF BibTeX XML Cite \textit{J. Li} and \textit{Z. Liu}, Kexue Tongbao, Sci. Bull. 30, 1285--1291 (1985; Zbl 0586.70016)
Amel’kin, V. V.; Lukashevich, N. A.; Sadovskiĭ, A. P. Nonlinear oscillations in systems of second order. (Нелинейные колебания в системах второго порядка.) (Russian) Zbl 0526.70024 Minsk: Izdatel’stvo BGU im. V. I. Lenina. 208 p. R. 1.90 (1982). Reviewer: M. E. Mayer MSC: 70Kxx 70-02 34-02 34D20 PDF BibTeX XML