@misc{indiciae879010c1b990,
  title = {Iron line emission from X-ray sources},
  author = {Boldt, E. A. and Holt, S. S. and Serlemitsos, P. J.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690010536},
  note = {Source identifier: 19690010536}
}