@article{10613,
  author = {R. Klein and John Castor},
  title = {H and He II spectra of Of stars},
  year = {1978},
  journal = {The Astrophysical Journal},
  volume = {220},
  pages = {902},
  month = {Jan-02-1978},
  issn = {0004-637X},
  url = {http://adsabs.harvard.edu/full/1978ApJ...220..902K},
  doi = {10.1086/155980},
}