Positive solutions of singular multipoint boundary value problems for systems of nonlinear second-order differential equations on infinite intervals in Banach spaces. Zhang, Xingqiu — 2009 Boundary Value Problems [electronic only]
Existence of positive solutions for boundary value problems of second-order nonlinear differential equations on the half line. Zhang, Xingqiu — 2009 Electronic Journal of Differential Equations (EJDE) [electronic only]
Global structure of positive solutions for superlinear singular m -point boundary-value problems. Zhang, Xingqiu — 2008 Electronic Journal of Differential Equations (EJDE) [electronic only]
Fixed points for discontinuous monotone operators. Cui, Yujun; Zhang, Xingqiu — 2010 Fixed Point Theory and Applications [electronic only]
Positive solutions for fourth-order singular p -Laplacian differential equations with integral boundary conditions. Zhang, Xingqiu; Cui, Yujun — 2010 Boundary Value Problems [electronic only]
On multiple sign-changing solutions for some second-order integral boundary value problems. Zhang, Xingqiu; Sun, Jingxian — 2010 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]