@article{7289,
  author = {G. Olson},
  title = {Theoretical P Cygni profiles for resonance lines from excited levels},
  year = {1981},
  journal = {The Astrophysical Journal},
  volume = {245},
  pages = {1054},
  month = {Jan-05-1981},
  issn = {0004-637X},
  url = {http://adsabs.harvard.edu/full/1981ApJ...245.1054O},
  doi = {10.1086/158882},
}