@article{2227,
  keywords = {pfc},
  author = {A. Ludlow and Tanya Zelevinsky and G. Campbell and S. Blatt and M. Boyd and M. de Miranda and M. Martin and J. Thomsen and S. Foreman and Jun Ye and Tara Fortier and J. Stalnaker and Scott Diddams and Y. Le Coq and Z. Barber and Nicola Poli and N. Lemke and K. Beck and C. Oates},
  title = {Sr Lattice Clock at 1 x 10-16 Fractional Uncertainty by Remote Optical Evaluation with a Ca Clock},
  year = {2008},
  journal = {Science},
  volume = {319},
  pages = {1805-1808},
  month = {2008-03},
  issn = {0036-8075},
  doi = {10.1126/science.1153341},
}