@misc{indiciae4995004d94c4,
  title = {Classical discrete time crystals},
  author = {Yao, Norman Y. and Nayak, Chetan and Balents, Leon and Zaletel, Michael P.},
  year = {2020},
  doi = {10.1038/s41567-019-0782-3},
  url = {https://www.osti.gov/biblio/1603622},
  note = {Source identifier: 1603622}
}