The following publications are possibly variants of this publication:
- Existence theory for multiple solutions to semipositone Dirichlet boundary value problems with singular dependent nonlinearities for second-order impulsive differential equationsLi Zu, Daqing Jiang, Donal O Regan. amc, 195(1):240-255, 2008. [doi]
- On existence of positive solutions of a two-point boundary value problem for a nonlinear singular semipositone systemLishan Liu, Xinguang Zhang, Yonghong Wu. amc, 192(1):223-232, 2007. [doi]
- Positive solutions of singular sub-linear boundary value problems for fourth-order and second-order differential equation systemsZhongli Wei, Mingchuan Zhang. amc, 197(1):135-148, 2008. [doi]