@article{10895,
  author = {A. Fabian and Carl Hansen},
  title = {Unravelling the "Helix" nebula},
  year = {1979},
  journal = {Monthly Notices of the Royal Astronomical Society},
  volume = {187},
  pages = {283-286},
  month = {1979-01},
  url = {http://adsabs.harvard.edu/full/1979MNRAS.187..283F},
  note = {JILA Pub. 1870},
}