@Misc{ 
  daltom02,
  author = { Dal Maso, Gianni and Tomarelli, Franco },
  title = { Variational Methods for Discontinuous Structures },
  journal = { PNLDE , Birkhauser, Basel, Boston, Berlin },
  year = { 2002 },
  volume = { 51 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/356/ },
  note = { cvgmt preprint}
}