Positive solutions for singular m -point boundary value problems with sign changing nonlinearities depending on x ' . Ma, Ya; Yan, Baoqiang — 2009 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
Multiple positive solutions for singular m -point boundary-value problems with nonlinearities depending on the derivative. Ma, Ya; Yan, Baoqiang — 2008 Electronic Journal of Differential Equations (EJDE) [electronic only]