@Article{ 
  CarCom20,
  author = { Carbotti, Alessandro and Comi, Giovanni Eugenio },
  title = { A note on Riemann-Liouville fractional Sobolev spaces },
  journal = { Communications on Pure and Applied Analysis },
  year = { 2021 },
  doi = { 10.3934/cpaa.2020255 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4616/ },
  note = { cvgmt preprint}
}