@Misc{ 
  BraLinSch17,
  author = { Brasco, Lorenzo and Lindgren, Erik and Schikorra, Armin },
  title = { Higher Holder regularity for the fractional $p-$Laplacian in the superquadratic case },
  journal = { Adv. Math. },
  year = { 2018 },
  pages = { 44 },
  URL = { http://cvgmt.sns.it/paper/3662/ },
  note = { cvgmt preprint}
}