%0 Journal Article
%A Patrice Le Calvez
%T Multivalued Lyapunov functions for homeomorphisms of the 
2-torus
%J Fundamenta Mathematicae
%D 2006
%P 227-253
%V 189
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm189-3-2/
%R 10.4064/fm189-3-2
%G en
%F 10_4064_fm189_3_2