@Article{ 
  PioSch19,
  author = { Piontek, Sebastian and Schmidt, Thomas },
  title = { Higher integrability for the gradient of Mumford-Shah almost-minimizers },
  journal = { ESAIM, Control Optim. Calc. Var. },
  year = { 2020 },
  volume = { 20 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4492/ },
  note = { cvgmt preprint}
}