@inbook{514,
  author = {Thomas Udem and Jörg Reichert and Ronald Holzwarth and Scott Diddams and D. Jones and Jun Ye and Steven Cundiff and T. Hänsch and John Hall},
  title = {A New Type of Frequency Chain and Its Application to Fundamental Frequency Metrology},
  year = {2001},
  volume = {570},
  chapter = {Part III},
  number = {Lecture Notes in Physics},
  pages = {125-144},
  month = {2001-08},
  publisher = {Springer Berlin Heidelberg},
  address = {Berlin, Heidelberg},
  issn = {Online ISBN     978-3-540-45395-6},
  isbn = {978-3-540-41935-8},
  doi = {10.1007/3-540-45395-4_7},
}