@Article{ 
  SchSch17,
  author = { Scheven, Christoph and Schmidt, Thomas },
  title = { On the dual formulation of obstacle problems for the total variation and the area functional },
  journal = { Ann. Inst. Henri Poincaré, Anal. Non Linéaire },
  year = { 2018 },
  volume = { 35 },
  pages = { 1175-1207 },
  URL = { http://cvgmt.sns.it/paper/3320/ },
  note = { cvgmt preprint}
}