Ma, Ruyun; Ren, Lishun Positive solutions for nonlinear \(m\)-point boundary value problems of Dirichlet type via fixed-point index theory. (English) Zbl 1070.34039 Appl. Math. Lett. 16, No. 6, 863-869 (2003). Reviewer: Pierpaolo Omari (Trieste) MSC: 34B18 34B10 PDF BibTeX XML Cite \textit{R. Ma} and \textit{L. Ren}, Appl. Math. Lett. 16, No. 6, 863--869 (2003; Zbl 1070.34039) Full Text: DOI
Ma, Ruyun; Wang, Rufa; Ren, Lishun Existence results for semipositone boundary value problems. (English) Zbl 1021.34017 Acta Math. Sci., Ser. B, Engl. Ed. 21, No. 2, 189-195 (2001). Reviewer: Idris Addou (Montréal) MSC: 34B18 34B16 34B15 PDF BibTeX XML Cite \textit{R. Ma} et al., Acta Math. Sci., Ser. B, Engl. Ed. 21, No. 2, 189--195 (2001; Zbl 1021.34017) Full Text: DOI