%0 Journal Article
%A Werner Ballmann
%T On the Lengths of Closed Geodesics on Convex Surfaces.
%J Inventiones mathematicae
%D 1983
%P 593-598
%V 71
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1983__71_143006/
%F IM_1983__71_143006