The following publications are possibly variants of this publication:
- Positive solutions to a generalized second order three-point boundary value problemRuixi Liang, Jun Peng, Jianhua Shen. amc, 196(2):931-940, 2008. [doi]
- Multiple positive solutions to second-order Neumann boundary value problemsJian Ping Sun, Wan-Tong Li. amc, 146(1):187-194, 2003. [doi]
- Three positive solutions for second-order Neumann boundary value problemsJian Ping Sun, Wan-Tong Li, Sui-Sun Cheng. appml, 17(9):1079-1084, 2004. [doi]