@Article{ 
  foc99,
  author = { Focardi, Matteo },
  title = { On the Variational Approximation of Free-Discontinuity Problems in the Vectorial Case },
  journal = { Math. Models Methods Appl. Sci. },
  year = { 2001 },
  number = { 11 },
  pages = { 663-684 },
  URL = { http://cvgmt.sns.it/paper/161/ },
  note = { cvgmt preprint}
}