Solutions of periodic boundary value problems for second-order nonlinear differential equations via variational methods. - Zhiqing Han (Appl. Math. Comput., 2011)

Periodic solutions to second order nonautonomous differential systems with gyroscopic forces. - Zhiqing Han; Suqin Wang; Minghai Yang (Appl. Math. Lett., 2011)

Existence of nontrivial solutions for a class of Kirchhoff equation with indefinite and 3-linear nonlinearity. - Zupei Shen; Zhiqing Han (Appl. Math. Lett., 2020)

Normalized ground states for Schrödinger system with a coupled critical nonlinearity. - Penghui Zhang; Zhiqing Han (Appl. Math. Lett., 2024)