Infinitely many solutions for a semilinear elliptic equation with sign-changing potential. Yu, Chen; Yongqing, Li — 2009 Boundary Value Problems [electronic only]
Ground states of nonlinear Schrödinger equations with potentials Yongqing Li; Zhi-Qiang Wang; Jing Zeng — 2006 Annales de l'I.H.P. Analyse non linéaire
Existence of solutions for a nonlinear elliptic Dirichlet boundary value problem with an inverse square potential. Weng, Shenghua; Li, Yongqing — 2006 Boundary Value Problems [electronic only]
On the existence of a positive solution for a semilinear elliptic equation in the upper half space. Chen, Shaowei; Li, Yongqing — 2002 Abstract and Applied Analysis