@article{5013,
  author = {David Hummer and P. Storey},
  title = {Recombination line intensities for hydrogenic ions - III. Effects of finite optical depth and dust},
  year = {1992},
  journal = {Monthly Notices of the Royal Astronomical Society},
  volume = {254},
  pages = {277-290},
  month = {01/1992},
  url = {http://articles.adsabs.harvard.edu/full/1992MNRAS.254..277H},
  note = {JILA Pub. 4527},
}