Ntouyas, S. K.; Palamides, P. K. The existence of positive solutions of nonlinear singular second-order boundary value problems. (English) Zbl 1007.34021 Math. Comput. Modelling 34, No. 5-6, 641-656 (2001). Reviewer: Petio S.Kelevedjiev (Sliven) MSC: 34B18 34B16 34B15 PDFBibTeX XMLCite \textit{S. K. Ntouyas} and \textit{P. K. Palamides}, Math. Comput. Modelling 34, No. 5--6, 641--656 (2001; Zbl 1007.34021) Full Text: DOI
Palamides, P. K. A topological principle and its application on a nonlinear two-point boundary value problem for functional differential equations. (English) Zbl 0611.34066 Arch. Math. 49, 44-65 (1987). MSC: 34K10 34B10 PDFBibTeX XMLCite \textit{P. K. Palamides}, Arch. Math. 49, 44--65 (1987; Zbl 0611.34066) Full Text: DOI
Bernfeld, S. R.; Palamides, P. K. A topological method for vector-valued and n th-order nonlinear boundary value problems. (English) Zbl 0558.34015 J. Math. Anal. Appl. 102, 488-508 (1984). MSC: 34B15 PDFBibTeX XMLCite \textit{S. R. Bernfeld} and \textit{P. K. Palamides}, J. Math. Anal. Appl. 102, 488--508 (1984; Zbl 0558.34015) Full Text: DOI