1. Nonlinear Functional Analysis;Deimling,1985
2. Double solutions of three-point boundary-value problems for second-order differential equations;Henderson;Electron. J. Differential Equations,2004
3. Nonlocal boundary value problem of the first kind for a Sturm–Liouville operator in its differential and difference aspects;II’in;Differ. Equ.,1987
4. Nonlocal boundary value problem of the second kind for a Sturm–Liouville operator;II’in;Differ. Equ.,1987
5. Existence of multiple positive solutions for a nonlocal boundary value problem;Karakostas;Topol. Methods Nonlinear Anal.,2002