Ekeland, Ivar Forced oscillations of nonlinear Hamiltonian systems. II. (English) Zbl 0484.70023 Adv. Math., Suppl. Stud. 7A, 345-360 (1981). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document MSC: 70J30 Free motions in linear vibration theory 70K40 Forced motions for nonlinear problems in mechanics 34C10 Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations 49L99 Hamilton-Jacobi theories Keywords:variational method Citations:Zbl 0404.34033; Zbl 0424.70029 PDFBibTeX XML