Xia, LiYao, Zhengan2021-08-052021-08-052007-03-15Xia, L., & Yao, Z. (2007). Positive solutions for a class of singular boundary-value problems. <i>Electronic Journal of Differential Equations, 2007</i>(43), pp. 1-5.1072-6691https://hdl.handle.net/10877/14203Using regularization and the sub-super solutions method, this note shows the existence of positive solutions for singular differential equation subject to four-point boundary conditions.Text5 pages1 file (.pdf)enAttribution 4.0 InternationalUpper and lower solutionExistenceSingular equationArticle