%0 Journal Article
%A P. Birtea
%A J.-P. Ortega
%A T. S. Ratiu 
%T A Local-to-Global Principle for Convexity in Metric Spaces
%J Journal of Lie theory
%D 2008
%P 445-469
%V 18
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JLT_2008_18_2_JLT_2008_18_2_a12/
%F JLT_2008_18_2_JLT_2008_18_2_a12