@article{10328,
  author = {Richard McCray and F. Lamb},
  title = {An opaque shell around Hercules X-1},
  year = {1976},
  journal = {The Astrophysical Journal},
  volume = {204},
  pages = {L115},
  month = {Jan-03-1976},
  issn = {0004-637X},
  url = {http://adsabs.harvard.edu/full/1976ApJ...204L.115M},
  doi = {10.1086/182067},
}