@article{9559,
  author = {E. Lewis and L. McNamara and H. Michels},
  title = {The broadening of the sodium D-lines},
  year = {1972},
  journal = {Solar Physics},
  volume = {23},
  pages = {287-288},
  month = {Jan-04-1972},
  issn = {0038-0938},
  url = {http://link.springer.com/10.1007/BF00148090},
  doi = {10.1007/BF00148090},
}