@article{theclusteredorienteeringproblemwith,
  title = {Clustered Orienteering Problem with Subgroups},
  author = {Luciano E. Almeida and Douglas G. Macharet},
  year = {2023},
  eprint = {2312.16154},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2312.16154v2},
}