An upper and lower solution theory for singular Emden-Fowler equations
Authors:
R. P. Agarwal;Donal O'Regan;V. Lakshmikantham;S. Leela
Affiliations:
Department of Mathematics, National University of Singapore, 10 Lower Kent Ridge Crescent, Singapore;Department of Mathematics, National University of Ireland, Galway, Ireland;Department of Mathematical Science, Florida Institute of Technology, Melbourne, FL;Department of Mathematics, SUNY at Geneseo, Geneseo, NY