[1] Souissi C. Minimal period symmetric solutions for some Hamiltonian systems via the Nehari manifold method. Acta Mathematica Scientia, 2020, 40B(4):614-624 https://link.springer.com/article/10.1007/s10473-020-0302-7
[2] Xiao Y. Periodic solutions with prescribed minimal period for the second order Hamiltonian systems with even potentials. Acta Mathematica Sinica, English Series, 2010, 26:825-830
[3] Rabinowitz P. On large norm periodic solutions of some differential equations//Katok A, ed. Ergodic Theory and Dynamical Systems Ⅱ. Proceedings Special Year, Maryland (1979-80). Progress in Mathematics, 21. Boston, Mass:Birkhäuser:1982:193-210 |