%0 Journal Article
%A C.-S. Barbat 
%T A Property of Liouville Surfaces and Manifolds
%J Journal for geometry and graphics
%D 2015
%P 179-188
%V 19
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JGG_2015_19_2_JGG_2015_19_2_a1/
%F JGG_2015_19_2_JGG_2015_19_2_a1