@misc{wu2017retrospective,
  title={Retrospective Higher-Order Markov Processes for User Trails},
  author={Tao Wu and David Gleich},
  year={2017},
  eprint={1704.05982},
  archivePrefix={arXiv},
  primaryClass={cs.SI},
  url={https://arxiv.org/abs/1704.05982}
}