@inproceedings{distanceapproximationtosupportcustomer,
  title = {Distance approximation to support customer selection in vehicle routing problems},
  author = {Fabian Akkerman and Martijn Mes},
  year = {2022},
  booktitle = {Annals of Operations Research 2022 4},
  url = {https://link.springer.com/article/10.1007/s10479-022-04674-8},
}