@article{onplanetarysystemsasorderedsequences,
  title = {On planetary systems as ordered sequences},
  author = {Emily Sandford and David Kipping and Michael Collins},
  year = {2021},
  eprint = {2105.09966},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2105.09966v1},
}