@Article{ 
  GigTam18,
  author = { Gigli, Nicola and Tamanini, Luca },
  title = { Second order differentiation formula on $RCD^*(K,N)$ spaces },
  journal = { J. Eur. Math. Soc. (JEMS) },
  year = { 2021 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3764/ },
  note = { cvgmt preprint}
}