1. Existence results for superlinear semipositone BVP’s;Anuradha;Proc. Amer. Math. Soc.,1996
2. Eigenvalue criteria for existence of multiple positive solutions of nonlinear boundary value problems of local and nonlocal type;Webb;Topolog. Methods in Nonlinear Anal.,2006
3. Positive Solutions of Differential, Difference and Integral Equations;Agarwal,1999
4. Some new existence results for differential and integral equations;Agarwal;Nonlinear Anal., Theory Methods Appl.,1997
5. Nonlinear eigenvalue problems involving two classes of functional differential equations;Davis;Houston J. Math.,2000