@Misc{ 
  IkoPasSou20,
  author = { Ikonen, Toni and Pasqualetto, Enrico and Soultanis, Elefterios },
  title = { Abstract and concrete tangent modules on Lipschitz differentiability  spaces },
  journal = {  },
  year = { 2020 },
  pages = { 14 },
  URL = { http://cvgmt.sns.it/paper/4919/ },
  note = { cvgmt preprint}
}