@article{7233,
  author = {John Hall and T. Baer and H. Robinson and L. Hollberg},
  title = {Optical heterodyne saturation spectroscopy},
  year = {1981},
  journal = {Applied Physics Letters},
  volume = {39},
  pages = {680},
  month = {Jan-01-1981},
  issn = {00036951},
  doi = {10.1063/1.92867},
}