@article{8035,
  author = {Roy Garstang},
  title = {Improved scattering formula for calculations of artificial night-sky illumination},
  year = {1984},
  journal = {The Observatory},
  volume = {104},
  pages = {196-197},
  month = {08/1984},
  url = {http://adsabs.harvard.edu/full/1984Obs...104..196G},
  note = {JILA Pub. 2850},
}