... Corporation Boundary Value ProblemsVolume 2011, Article ID 475126, 17 pagesdoi:10.1155/2011/475126Research Article Existence of Positive Solutions to a Boundary Value Problem for a Delayed Nonlinear Fractional Differential ... “Positive solutions of a boundary value problem for a nonlinear fractional differential equation, ” Electronic Journal of Qualitative Theory of Differential Equations,no.3,11 pages, 2008.15N. Kosmatov, ... theory of fractional differential equations, we refer thereaders to 3–7.Recently, many researchers have devoted their attention to studying the existence of positive solutions of boundary value...