@article{8650,
  author = {M. Barlow},
  title = {The determination of the masses of Magellanic Cloud planetary nebulae using [O II] doublet ratio electron densities},
  year = {1987},
  journal = {Monthly Notices of the Royal Astronomical Society},
  volume = {227},
  pages = {161-183},
  url = {http://articles.adsabs.harvard.edu/full/1987MNRAS.227..161B},
  note = {JILA Pub. 3435},
}