@misc{indiciae46eb7a03a38b,
  title = {Spectral variability in early-type binary X-ray systems},
  author = {Kallman, T. R. and Castor, J. I. and Olson, G. L. and Mccray, R.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19840060491},
  note = {Source identifier: 19840060491}
}