@misc{indiciae05ad57855cc5,
  title = {A pulsing X-ray source in Circinus},
  author = {Margon, B. and Lampton, M. and Bowyer, S. and Cruddace, R.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710026671},
  note = {Source identifier: 19710026671}
}