Existence of multiple positive solutions for a nonlocal boundary value problem

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Positive solutions of nonlocal boundary value problems involving integral conditions (2008, methodology): “We treat all of the above BCs (and others) in a unified way and obtain new results by allowing signed measures, but even for (positive) measures we obtain distinct improvements on [7, 15].”
Non-negative solutions of systems of ODEs with coupled boundary conditions (2012, methodology): “The boundary conditions (6) involve functionals of the form bij½w ¼ Z 1 0 wðsÞdBijðsÞ; and include, as special cases, m-point and integral conditions, when bij½w ¼ Xm j¼1 dijwðgijÞ and bij½w ¼ Z 1 0 dijðsÞwðsÞds: For previous work on Riemann–Stieltjes integral BCs we refer the reader, for example, t”