@misc{indiciae0ceb3a674056,
  title = {Frequency spirals},
  author = {Ottino-Löffler, Bertrand},
  year = {2016},
  doi = {10.1063/1.4954038},
  url = {https://www.osti.gov/biblio/22596658},
  note = {Source identifier: 22596658}
}