@misc{indiciaed3463622fce4,
  title = {3C 273 - X-ray variability, spectrum, and position},
  author = {Bradt, H. V. and Doxsey, R. E. and Johnston, M. D. and Schwartz, D. A. and Liller, W. and Burkhead, M. S. and Dent, W. A. and Smith, A. G.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19790051621},
  note = {Source identifier: 19790051621}
}