@Misc{ 
  RacToa13,
  author = { Racca, Simone and Toader, Rodica },
  title = { A  variational model for the quasi-static growth of fractional dimensional brittle fractures },
  journal = {  },
  year = { 2013 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2198/ },
  note = { cvgmt preprint}
}