@article{3176,
  author = {David Leibrandt and M Thorpe and Chin-Wen Chou and Tara Fortier and Scott Diddams and Till Rosenband},
  title = {Absolute and relative stability of an optical frequency reference based on spectral hole burning in Eu<sup>3+</sup>:Y<sub>2</sub>SiO<sub>5</sub>},
  year = {2013},
  number = {111},
  month = {2013-12-06},
  publisher = {Physical Review Letters},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=914300},
  language = {en},
}