@article{4589,
  author = {Roy Garstang},
  title = {The absorption and scattering properties of Saharan and volcanic dust},
  year = {1991},
  journal = {The Observatory},
  volume = {111},
  pages = {239-243},
  month = {10/1991},
  url = {http://adsabs.harvard.edu/full/1991Obs...111..239G},
  note = {JILA Pub. 4456},
}