@Article{ 
  toazan,
  author = { Toader, Rodica and Zanini, Chiara },
  title = { An artificial viscosity approach to quasistatic crack growth },
  journal = { Boll. Unione Mat. Ital. (9) },
  year = { 2009 },
  volume = { 2 },
  number = { 1 },
  pages = { 1-35 },
  URL = { http://cvgmt.sns.it/paper/1350/ },
  note = { cvgmt preprint}
}