@article{
  author = {Manavizadeh, Neda, Farrokhi-Asl, Hamed, W.T. Lim, Stanley Frederick},
  title = {A New Mathematical Model for the Green Vehicle Routing Problem by Considering a Bi-Fuel Mixed Vehicle Fleet},
  journal = {Journal of Optimization in Industrial Engineering},
  year = {2020},
  volume = {13},
  number = {2},
  pages = {165-183},
  doi = {10.22094/joie.2020.1871922.1667}
}