@misc{galal2025papertrailstrusttracks,
      title={From Paper Trails to Trust on Tracks: Adding Public Transparency to Railways via zk-SNARKs}, 
      author={Tarek Galal and Valeria Tisch and Katja Assaf and Andreas Polze},
      year={2025},
      eprint={2504.19640},
      archivePrefix={arXiv},
      primaryClass={cs.CR},
      url={https://arxiv.org/abs/2504.19640}, 
}