@Article{ 
  negpao01,
  author = { Negri, Matteo and Paolini, Maurizio },
  title = { Numerical minimization of the Mumford-Shah functional },
  journal = { Calcolo },
  year = { 2001 },
  volume = { 38 },
  pages = { 67-84 },
  URL = { http://cvgmt.sns.it/paper/1153/ },
  note = { cvgmt preprint}
}