@article{StengerSchneiderGoeke2020,
  author    = {Andreas Stenger and Michael Schneider and Dominik Goeke},
  title     = {The prize-collecting vehicle routing problem with single and multiple depots and non-linear cost},
  journal   = {EURO Journal on Transportation and Logistics},
  volume    = {2},
  number    = {1-2},
  pages     = {57 -- 87},
  doi       = {10.1007/s13676-013-0022-4},
  year      = {2020},
}