The Lazer-McKenna conjecture for radial solutions in the ℝ N ball. Castro, Alfonso; Gadam, Sudhasree — 1993 Electronic Journal of Differential Equations (EJDE) [electronic only]
Exact multiplicity of positive solutions in semipositone problems with concave-convex type nonlinearities. Gadam, Sudhasree; Iaia, Joseph A. — 2001 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]