%0 Journal Article %A Mawhin, Jean %A Omana, Walo %T Two-point boundary value problems for nonlinear perturbations of some singular linear differential equations at resonance %J Commentationes Mathematicae Universitatis Carolinae %D 1989 %P 537-550 %V 30 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1989__30_3_a12/ %G en %F CMUC_1989__30_3_a12