Ren, Li-shun; Hu, Hong-an The existence of multiple positive solutions to \(n\) order nonlinear eigenvalue problem. (Chinese. English summary) Zbl 1264.34029 J. Henan Univ., Nat. Sci. 42, No. 1, 13-16 (2012). MSC: 34B09 34B10 34B18 47N20 PDF BibTeX XML Cite \textit{L.-s. Ren} and \textit{H.-a. Hu}, J. Henan Univ., Nat. Sci. 42, No. 1, 13--16 (2012; Zbl 1264.34029)
Ren, Lishun; Hu, Hongan Three positive solutions for multi-point boundary value problems with sign changing nonlinear term. (English) Zbl 1249.34077 J. Zhoukou Norm. Univ. 28, No. 2, 1-4 (2011). MSC: 34B18 34B10 PDF BibTeX XML Cite \textit{L. Ren} and \textit{H. Hu}, J. Zhoukou Norm. Univ. 28, No. 2, 1--4 (2011; Zbl 1249.34077)