@article{9271,
  author = {M. O'Callaghan and Alan Gallagher},
  title = {Sodium Doppler-free collisional line shapes},
  year = {1989},
  journal = {Physical Review A},
  volume = {39},
  pages = {6190-6205},
  month = {Jan-06-1989},
  issn = {0556-2791},
  doi = {10.1103/PhysRevA.39.6190},
}