@Misc{ 
  GigTam17a,
  author = { Gigli, Nicola and Tamanini, Luca },
  title = { Second order differentiation formula on $RCD(K,N)$ spaces },
  journal = { Atti Accad. Naz. Lincei Rend. Lincei Mat. Appl. },
  year = { 2018 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3687/ },
  note = { cvgmt preprint}
}