%0 Journal Article
%A Ukpera, Awar Simon
%T Periodic solutions of certain third order differential systems with nonlinear dissipation
%J Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
%D 2002
%P 147-159
%V 41
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AUPO_2002__41_1_a13/
%G en
%F AUPO_2002__41_1_a13