@Article{ 
  ambfaimar00,
  author = { Ambrosio, Luigi and Faina, Loris and March, Riccardo },
  title = { Variational Approximation of a Second Order Free Discontinuity Problem in Computer Vision },
  journal = { SIAM J. Math. Anal. },
  year = { 2001 },
  number = { 32 },
  pages = { 1171-1197 },
  URL = { http://cvgmt.sns.it/paper/1335/ },
  note = { cvgmt preprint}
}