Deng, Shitao On the periodic solutions of Hamiltonian systems of second-order. (English) Zbl 0618.58024 Acta Math. Sin., New Ser. 1, 319-326 (1985). Reviewer: P.Drábek MSC: 37J99 34C25 34B15 × Cite Format Result Cite Review PDF Full Text: DOI
Liang, Zhongchao Limit boundary value problem for nonlinear differential equation of the second order. (English) Zbl 0616.34009 Acta Math. Sin., New Ser. 1, 119-125 (1985). Reviewer: K.S.Miller MSC: 34B05 34A34 34E99 34C11 × Cite Format Result Cite Review PDF Full Text: DOI
Cao, Zhijiang On self-adjoint domains of 2-nd order differential operators in limit- circle case. (English) Zbl 0609.34036 Acta Math. Sin., New Ser. 1, 225-230 (1985). Reviewer: D.Bobrowski MSC: 34C05 34C99 47E05 × Cite Format Result Cite Review PDF Full Text: DOI
Huang, Kecheng On the sufficient conditions for the existence of limit cycles of the system \(dx/dt=y\), \(dy/dt=\sum _{1\leq i+j\leq 2m+1}b_{ij}x^ iy^ i\). (English) Zbl 0609.34035 Acta Math. Sin., New Ser. 1, 255-260 (1985). Reviewer: D.Bobrowski MSC: 34C05 34A34 34C25 × Cite Format Result Cite Review PDF Full Text: DOI