@conference{5383,
  author = {G. Harper},
  title = {Geometry, and the interpretation of chromospheric spectra},
  year = {1994},
  publisher = {San Francisco: Astronomical Society of the Pacific},
  address = {Athens, Georgia},
  url = {http://adsabs.harvard.edu/full/1994ASPC...64..414H},
  note = {JILA Pub. 5115},
}