Positive solutions for second-order m-point boundary-value problems with nonlinearity depending on the first derivative. Yang, Liu; Liu, Xiping; Shen, Chunfang — 2006 Electronic Journal of Differential Equations (EJDE) [electronic only]
Sufficient condition for existence of solutions for higher-order resonance boundary value problem with one-dimensional p-Laplacian. Yang, Liu; Shen, Chunfang; Liu, Xiping — 2007 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]