@misc{indiciaec40fb3c94dca,
  title = {Soft X-rays from Cygnus X-2 and from Cygnus X-1 /in eclipse/.},
  author = {Stevens, J. C. and Garmire, G. P. and Riegler, G. R.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720051631},
  note = {Source identifier: 19720051631}
}