1. Nonlocal boundary value problem of the first kind for a Sturm Liouville operator in its differential and finite difference aspects;Il’in;Differ. Equ.,1987
2. Nonlocal boundary value problem of the second kind for a Sturm Liouville operator;Il’in;Differ. Equ.,1987
3. Solvability of a three-point nonlinear boundary value problem for a second order ordinary differential equation;Gupta;J. Math. Anal. Appl.,1992
4. Positive solutions for higher order ordinary differential equations;Eloe;Electron. J. Differential Equations,1995
5. Positive solutions for two point boundary value problems;Eloe;Dynam. Systems Appl.,1996