@article{onsuspicioustracksmachinelearningbased,
  title = {On suspicious tracks: machine-learning based approaches to detect cartels in railway-infrastructure procurement},
  author = {Hannes Wallimann and Silvio Sticher},
  year = {2023},
  eprint = {2304.11888},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2304.11888v1},
}