%0 Journal Article
%T Differentiability of Mather's average action and integrability on closed surfaces
%A Daniel Massart
%A Alfonso Sorrentino
%J Mathematics
%D 2009
%I arXiv
%X In this article we study the differentiability of Mather's $\beta$-function on closed surfaces and its relation to the integrability of the system.
%U http://arxiv.org/abs/0907.2055v2