@Misc{ 
  DweGhoPal19,
  author = { Dweik, Samer and Ghoussoub, Nassif and Palmer, Aaron Zeff },
  title = { Optimal controlled transports with free end times subject to import/export tariffs },
  journal = { Journal of Dynamical and Control Systems },
  year = { 2019 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4251/ },
  note = { cvgmt preprint}
}