@Article{ 
  focgelpon07,
  author = { Focardi, Matteo and Gelli, Maria Stella and Ponsiglione, Marcello },
  title = { Fracture mechanics in perforated domains: a variational model for brittle porous media },
  journal = { Math. Models Methods Appl. Sci.  },
  year = { 2009 },
  volume = { 19 },
  number = { 11 },
  pages = { 2065-2100 },
  URL = { http://cvgmt.sns.it/paper/350/ },
  note = { cvgmt preprint}
}