%0 Journal Article
%A Drábek, Pavel
%T A resonance problem for nonlinear Duffing equation
%J Commentationes Mathematicae Universitatis Carolinae
%D 1988
%P 205-215
%V 29
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1988__29_2_a0/
%G en
%F CMUC_1988__29_2_a0