@article{10373,
  author = {B. Haisch},
  title = {A tensor formulation of the equation of transfer for spherically symmetric flows},
  year = {1976},
  journal = {The Astrophysical Journal},
  volume = {205},
  pages = {520},
  month = {Jan-05-1976},
  issn = {0004-637X},
  url = {http://adsabs.harvard.edu/full/1976ApJ...205..520H},
  doi = {10.1086/154305},
}