%0 Journal Article
%A Francesco Mercuri
%T The Critical Points Theory for the Closed Geodesics Problem.
%J Mathematische Zeitschrift
%D 1977
%P 231-246
%V 156
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1977__156_172584/
%F MZ_1977__156_172584