@misc{indiciae87525fe17a73,
  title = {X-Ray Weak Broad-Line Quasars: Absorption or Intrinsic X-Ray Weakness},
  author = {Risaliti, Guido and Mushotzky, Richard F.},
  year = {2004},
  url = {https://ntrs.nasa.gov/citations/20040016144},
  note = {Source identifier: 20040016144}
}