Long, Yiming Periodic solutions of perturbed superquadratic Hamiltonian systems. (English) Zbl 0724.34052 Ann. Sc. Norm. Super. Pisa, Cl. Sci., IV. Ser. 17, No. 1, 35-77 (1990). Reviewer: A.Cañada (Granada) MSC: 34C25 58E05 PDFBibTeX XMLCite \textit{Y. Long}, Ann. Sc. Norm. Super. Pisa, Cl. Sci., IV. Ser. 17, No. 1, 35--77 (1990; Zbl 0724.34052) Full Text: Numdam EuDML
Beirão da Veiga, Hugo Periodic solutions for a class of autonomous Hamiltonian systems. (English) Zbl 0709.34035 Rend. Semin. Mat. Univ. Padova 83, 183-192 (1990). Reviewer: H.Beirão da Veiga MSC: 34C25 70H05 PDFBibTeX XMLCite \textit{H. Beirão da Veiga}, Rend. Semin. Mat. Univ. Padova 83, 183--192 (1990; Zbl 0709.34035) Full Text: Numdam EuDML