1. A note on existence of nonnegative solutions to singular semi-positone problems;Agarwal;Nonlinear Anal.,1999
2. Existence results for superlinear semipositone BVPs;Anuradha;Proc. Am. Math. Soc.,1996
3. Introduction to the Analysis of Chemical Reactors;Aris,1965
4. Positive solutions to a second order multi-point boundary value problem;Cao;Electron. J. Diff. Eqns.,2000
5. Nonlinear eigenvalue problems with semipositone;Castro;Electron. J. Diff. Equat. Conf.,2000