@misc{indiciae367d0ce8392f,
  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/19690044242},
  note = {Source identifier: 19690044242}
}