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• New Proofs of Monotonicity of Period Function for Cubic Elliptic Hamiltonian

  Chenguang Li, Chengzhi Li

  2024-04-10

  21863 2930 Pages:301-305 Open-access

• Poincaré Bifurcation from an Elliptic Hamiltonian of Degree Four with Two-Saddle Cycle

  Yu’e Xiong, Wenyu Li, Qinlong Wang

  2024-04-10

  13288 1884 Pages:722-735 Open-access