@Misc{ 
  DumSan23,
  author = { Dumas, Annette and Santambrogio, Filippo },
  title = { Optimal trajectories in $L^1$ and under $L^1$ penalizations },
  journal = { Comptes Rendus Mathématiques },
  year = { 2023 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/6023/ },
  note = { cvgmt preprint}
}