@article{2044,
  keywords = {pfc},
  author = {G. Campbell and A. Ludlow and S. Blatt and J. Thomsen and M. Martin and M. de Miranda and Tanya Zelevinsky and M. Boyd and Jun Ye and Scott Diddams and T. Heavner and T. Parker and S. Jefferts},
  title = {The absolute frequency of the 87Sr optical clock transition},
  year = {2008},
  journal = {Metrologia},
  volume = {45},
  pages = {539-548},
  month = {2008-10},
  issn = {0026-1394},
  doi = {10.1088/0026-1394/45/5/008},
}