@article{2220,
  author = {Steven Cundiff and Jun Ye and John Hall},
  title = {Rulers of Light: Using Lasers to Measure Distance and Time},
  year = {2008},
  journal = {Scientific American},
  volume = {298},
  month = {2008-04},
  url = {http://www.scientificamerican.com/article.cfm?id=measuring-with-lasers},
  note = {JILA Pub. 7852},
}