@Misc{ 
  AmbPonRod18,
  author = { Ambrosio, Luigi and Ponce, Augusto and Rodiac, Rémy },
  title = { Critical weak-$L^{p}$ differentiability of singular integrals },
  journal = { Revista Matemática Iberoamericana },
  year = { 2018 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4066/ },
  note = { cvgmt preprint}
}