@misc{indiciae5870902807a0,
  title = {The X-ray Timing Explorer},
  author = {Bradt, H. V. and Swank, J. H. and Rothschild, R. E.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900028937},
  note = {Source identifier: 19900028937}
}