@Misc{ 
  LahPinZho22,
  author = { Lahti, Panu and Pinamonti, Andrea and Zhou, Xiaodan },
  title = { A characterization of BV and Sobolev functions via nonlocal functionals in metric spaces },
  journal = { Nonlinear Analysis },
  year = { 2022 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5616/ },
  note = { cvgmt preprint}
}