@article{806246,
  author = {T. Ido and T Loftus and M Boyd and Andrew Ludlow and K Holman and Jun Ye},
  title = {Precision spectroscopy and density-dependent frequency shifts in ultracold Sr},
  year = {2005},
  number = {94},
  month = {2005-01-01 00:01:00},
  publisher = {Physical Review Letters},
  language = {en},
}