%0 Journal Article %A Przeradzki, Bogdan %T Nonlinear boundary value problems at resonance for differential equations in Banach spaces %J Mathematica slovaca %D 1995 %P 139-153 %V 45 %N 2 %U http://geodesic.mathdoc.fr/item/MASLO_1995_45_2_a4/ %G en %F MASLO_1995_45_2_a4