%0 Journal Article
%A Górniewicz, Lech
%T Periodic problems for ODEs via multivalued Poincaré operators
%J Archivum mathematicum
%D 1998
%P 93-104
%V 34
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ARM_1998__34_1_a9/
%G en
%F ARM_1998__34_1_a9