@article{atwophasesafevehicleroutingand,
  title = {A Two-Phase Safe Vehicle Routing and Scheduling Problem: Formulations and Solution Algorithms},
  author = {Aschkan Omidvar and Eren Erman Ozguven and O. Arda Vanli and R. Tavakkoli-Moghaddam},
  year = {2017},
  eprint = {1710.07147},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1710.07147v1},
}