@Article{ 
  Sci12,
  author = { Scilla, Giovanni },
  title = { Variational problems with percolation: rigid spin systems },
  journal = { Adv. Math. Sci. Appl. },
  year = { 2013 },
  volume = { 23 },
  number = { 1 },
  pages = { 187-207 },
  URL = { http://cvgmt.sns.it/paper/2043/ },
  note = { cvgmt preprint}
}