@book{825271,
  author = {Thomas Udem and J Reichert and R Holzwarth and Scott Diddams and D Jones and Jun Ye and Steven Cundiff and T Hansch and John Hall},
  title = {A new type of frequency chain and its application to fundamental frequency metrology, ed by S.G. Karshenboim et al.},
  year = {2001},
  month = {2001-01-01 00:01:00},
  publisher = { Springer , New York, NY},
  language = {en},
}