@article{10610,
  author = {G. Rybicki and David Hummer},
  title = {A generalization of the Sobolev method for flows with nonlocal radiative coupling},
  year = {1978},
  journal = {The Astrophysical Journal},
  volume = {219},
  pages = {654},
  month = {Jan-01-1978},
  issn = {0004-637X},
  url = {http://articles.adsabs.harvard.edu/full/1978ApJ...219..654R},
  doi = {10.1086/155826},
}