@Article{ 
  AmbSte18,
  author = { Ambrosio, Luigi and Stefani, Giorgio },
  title = { Heat and entropy flows in Carnot groups },
  journal = { Rev. Mat. Iberoam. },
  year = { 2020 },
  doi = { 10.4171/rmi/1129 },
  number = { 1 },
  pages = { 257--290 },
  URL = { http://cvgmt.sns.it/paper/3726/ },
  note = { cvgmt preprint}
}