@Article{ 
  belnovorl08,
  author = { Bellettini, Giovanni and Novaga, Matteo and Orlandi, Giandomenico },
  title = { Time-like lorentzian minimal submanifolds as singular limits of  nonlinear wave equations },
  journal = { Physica D },
  year = { 2010 },
  volume = { 239 },
  pages = { 335-339 },
  URL = { http://cvgmt.sns.it/paper/949/ },
  note = { cvgmt preprint}
}