%0 Journal Article
%A Benevieri, Pierluigi
%A Gavioli, Andrea
%A Villarini, Massimo
%T Existence of periodic orbits for vector fields via Fuller index and the averaging method
%J Electronic Journal of Differential Equations
%D 2004
%V 2004
%I mathdoc
%U http://geodesic.mathdoc.fr/item/EJDE_2004__2004__a67/
%G en
%F EJDE_2004__2004__a67