@Article{ 
  ComSte19,
  author = { Comi, Giovanni Eugenio and Stefani, Giorgio },
  title = { A distributional approach to fractional Sobolev spaces and fractional variation: asymptotics I },
  journal = { Rev. Mat. Complut. },
  year = { 2022 },
  doi = { 10.1007/s13163-022-00429-y },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4507/ },
  note = { cvgmt preprint}
}