%0 Journal Article
%A Victor Bangert
%T Closed Geodesics on Complete Surfaces.
%J Mathematische Annalen
%D 1980
%P 83-96
%V 251
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1980__251_163426/
%F MAN_1980__251_163426