@misc{indiciae059c65dbdba6,
  title = {Binary modulation and transient periodic variations in X-ray emission from the AM Her binary H 0139 - 68},
  author = {Singh, K. P. and Agrawal, P. C. and Riegler, G. R.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19840053240},
  note = {Source identifier: 19840053240}
}