@Article{ 
  dellanmar06,
  author = { Del Piero, Gianpietro and Lancioni, Giovanni and March, Riccardo },
  title = { A variational model for fracture mechanics: numerical experiments },
  journal = { J. Mech. Phys. Solids },
  year = { 2007 },
  volume = { 55 },
  pages = { 2513-2537 },
  URL = { http://cvgmt.sns.it/paper/467/ },
  note = { cvgmt preprint}
}