Cao Xiaofei and Xu Junxiang: Multiple positive solutions for Schrödinger problems with concave and convex nonlinearities. (2018)
Cao Xiaofei and Xu Junxiang: Multiple solutions for Kirchhoff type problems involving super-linear and sub-linear terms. (2016)
Lu Xuezhu and Xu Junxiang and Kong Yuedong: The persistence of elliptic lower dimensional tori with prescribed frequency for Hamiltonian systems. (2015)
Ding Jian and Xu Junxiang and Zhang Fubao: Homoclinic solutions for a class of non-periodic second order Hamiltonian systems. (2010)