Monotone iterative technique for first-order nonlinear periodic boundary value problems on time scales. Zhao, Ya-Hong; Sun, Jian-Ping — 2010 Advances in Difference Equations [electronic only]
The upper and lower solution method for nonlinear third-order three-point boundary value problem. Sun, Jian-Ping; Ren, Qiu-Yan; Zhao, Ya-Hong — 2010 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
Multiple positive solutions for nonlinear third-order three-point boundary-value problems. Guo, Li-Jun; Sun, Jian-Ping; Zhao, Ya-Hong — 2007 Electronic Journal of Differential Equations (EJDE) [electronic only]