@Article{ 
  caggomtra,
  author = { Cagnetti, Filippo and Gomes, Diogo and Tran, Hung V. },
  title = { Aubry-Mather Measures in the Non Convex setting },
  journal = { SIAM J. Math. Anal. },
  year = { 2011 },
  volume = { 43 },
  pages = { 2601-2629 },
  URL = { http://cvgmt.sns.it/paper/308/ },
  note = { cvgmt preprint}
}