@conference{918361,
  author = {Zachary H. Levine},
  title = {Semiclassical Theory of Photon Echoes with Application to Pr:YSO},
  year = {2021},
  month = {2021-11-04 04:11:00},
  publisher = {Frontiers in Optics, Conference Proceedings 2021, Washington, DC, US},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=932892},
  doi = {https://doi.org/10.1364/FIO.2021.JW7A.23},
  language = {en},
}