Xu, Xian; O’Regan, Donal; Agarwal, R. P. Multiplicity results via topological degree for impulsive boundary value problems under non-well-ordered upper and lower solution conditions. (English) Zbl 1158.34015 Bound. Value Probl. 2008, Article ID 197205, 21 p. (2008). MSC: 34B37 47N20 PDFBibTeX XMLCite \textit{X. Xu} et al., Bound. Value Probl. 2008, Article ID 197205, 21 p. (2008; Zbl 1158.34015) Full Text: DOI EuDML
Xu, Xian; O’Regan, Donal; Sun, Jingxian Multiplicity results for three-point boundary value problems with a non-well-ordered upper and lower solution condition. (English) Zbl 1140.34009 Math. Comput. Modelling 45, No. 1-2, 189-200 (2007). Reviewer: Irena Rachůnková (Olomouc) MSC: 34B10 34B15 47N20 PDFBibTeX XMLCite \textit{X. Xu} et al., Math. Comput. Modelling 45, No. 1--2, 189--200 (2007; Zbl 1140.34009) Full Text: DOI