Erbe, Lynn H.; Mathsen, Ronald M. Positive solutions for singular nonlinear boundary value problems. (English) Zbl 1007.34020 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 46, No. 7, 979-986 (2001). Reviewer: Petio S.Kelevedjiev (Sliven) MSC: 34B18 34B16 34B15 PDFBibTeX XMLCite \textit{L. H. Erbe} and \textit{R. M. Mathsen}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 46, No. 7, 979--986 (2001; Zbl 1007.34020) Full Text: DOI
Erbe, Lynn H.; Mathsen, Ronald M.; Peterson, Allan Factoring linear differential operators on measure chains. (English) Zbl 1001.34029 J. Inequal. Appl. 6, No. 3, 287-303 (2001). Reviewer: Roman Hilscher (East Lansing) MSC: 34C20 39A12 39A70 34C10 PDFBibTeX XMLCite \textit{L. H. Erbe} et al., J. Inequal. Appl. 6, No. 3, 287--303 (2001; Zbl 1001.34029) Full Text: DOI EuDML
Erbe, Lynn; Peterson, Allan; Mathsen, Ronald Existence, multiplicity and nonexistence of positive solutions to a differential equation on a measure chain. (English) Zbl 0937.34025 J. Comput. Appl. Math. 113, No. 1-2, 365-380 (2000). MSC: 34B45 34B15 PDFBibTeX XMLCite \textit{L. Erbe} et al., J. Comput. Appl. Math. 113, No. 1--2, 365--380 (2000; Zbl 0937.34025) Full Text: DOI
Butler, G. J.; Erbe, L. H.; Mathsen, R. M. On the non-existence of conjugate points. (English) Zbl 0223.34024 Can. Math. Bull. 13, 31-37 (1970). MSC: 34C10 PDFBibTeX XMLCite \textit{G. J. Butler} et al., Can. Math. Bull. 13, 31--37 (1970; Zbl 0223.34024) Full Text: DOI