1. Comparison principle and theory of nonlinear boundary value problems;Chandra,1982
2. Fixed Point Theory;Dugundji,1982
3. Solvability of three point boundary value problems at resonance;Feng;Nonlinear Anal.,1997
4. Solvability of a three-point boundary-value problem for a second order ordinary differential equation;Gupta;J. Math. Anal. Appl.,1992
5. Solvability of a generalized multi-point boundary value problem of mixed type for second order ordinary differential equations;Gupta;Proc. Dynamic Systems Appl.,1995