@article{11801,
  keywords = {pfc},
  author = {T. Ido and T. Loftus and M. Boyd and A. Ludlow and K. Holman and Jun Ye},
  title = {Precision Spectroscopy and Density-Dependent Frequency Shifts in Ultracold Sr},
  year = {2005},
  journal = {Physical Review Letters},
  volume = {94},
  month = {2005-04},
  issn = {0031-9007},
  doi = {10.1103/PhysRevLett.94.153001},
}