The existence of countably many positive solutions for nonlinear n th-order three-point boundary value problems. Ji, Yude; Guo, Yanping — 2009 Boundary Value Problems [electronic only]
Existence of solutions for m -point boundary value problems on a half-line. Yu, Changlong; Guo, Yanping; Ji, Yude — 2009 Advances in Difference Equations [electronic only]
Existence of triple positive solutions for second-order discrete boundary value problems. Guo, Yanping; Zhang, Jiehua; Ji, Yude — 2007 Discrete Dynamics in Nature and Society