@article{thecompanionmodelacanonicalmodelin,
  title = {The Companion Model -- a Canonical Model in Graph Signal Processing},
  author = {John Shi and Jose M. F. Moura},
  year = {2022},
  eprint = {2203.13791},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2203.13791v1},
}