@article{7271,
  author = {P. Massey and Peter Conti},
  title = {Spectroscopic studies of Wolf-Rayet stars with absorption lines. IV - The mass of CX Cephei /WN5+O/. V - HD 9974, a single WN3},
  year = {1981},
  journal = {The Astrophysical Journal},
  volume = {244},
  pages = {169},
  month = {Jan-03-1981},
  issn = {0004-637X},
  url = {http://articles.adsabs.harvard.edu/full/1981ApJ...244..169M},
  doi = {10.1086/158694},
}