@article{9027,
  author = {Edward Fitzpatrick},
  title = {The properties of OB supergiants in the Large Magellanic Cloud. II - Spectral types and intrinsic colors},
  year = {1988},
  journal = {The Astrophysical Journal},
  volume = {335},
  pages = {703},
  month = {Jan-12-1988},
  issn = {0004-637X},
  url = {http://articles.adsabs.harvard.edu/full/1988ApJ...335..703F},
  doi = {10.1086/166960},
}