@article{9406,
  author = {J.-C. Pecker and Richard Thomas},
  title = {Saturation in Fraunhofer Lines},
  year = {1970},
  journal = {The Observatory (Letter to the Editor in reply to  E. A. Gussmann)},
  volume = {90},
  chapter = {207},
  pages = {207-209},
  month = {10/1970},
  note = {JILA Pub. 600},
}