@Article{ 
  caschanov09,
  author = { Caselles, Vicent and Chambolle, Antonin and Novaga, Matteo },
  title = { Regularity for solutions of the total variation denoising problem },
  journal = { Rev. Mat. Iberoamericana },
  year = { 2011 },
  volume = { 27 },
  number = { 1 },
  pages = { 233-252 },
  URL = { http://cvgmt.sns.it/paper/912/ },
  note = { cvgmt preprint}
}