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37J45 Periodic, homoclinic and heteroclinic orbits; variational methods, degree-theoretic methods (6 articles)

• Zhang, Liang; Tang, X. H.: Periodic solutions for some nonautonomous $p(t)$-Laplacian Hamiltonian systems. (English). Applications of Mathematics, vol. 58 (2013), issue 1, pp. 39-61
• Zhang, Xingyong; Tang, Xianhua: Existence of solutions for a nonlinear discrete system involving the $p$-Laplacian. (English). Applications of Mathematics, vol. 57 (2012), issue 1, pp. 11-30
• Zhang, Qiongfen; Tang, X. H.: Periodic solutions for second order Hamiltonian systems. (English). Applications of Mathematics, vol. 57 (2012), issue 4, pp. 407-425
• Dzedzej, Zdzisław: Conley type index and Hamiltonian inclusions. (English). Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, vol. 49 (2010), issue 1, pp. 33-47
• Zhang, Xingyong; Zhou, Yinggao: On periodic solutions of non-autonomous second order Hamiltonian systems. (English). Applications of Mathematics, vol. 55 (2010), issue 5, pp. 373-384
• Papageorgiou, Evgenia H.; Papageorgiou, Nikolaos S.: Existence of solutions and of multiple solutions for nonlinear nonsmooth periodic systems. (English). Czechoslovak Mathematical Journal, vol. 54 (2004), issue 2, pp. 347-371