@Misc{ 
  Fig23,
  author = { Figalli, Alessio },
  title = { An introduction to optimal transport and Wasserstein gradient flows },
  journal = { Preprint },
  year = { 2023 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/6860/ },
  note = { cvgmt preprint}
}