@misc{indiciae1090804bf32a,
  title = {C IV line profile correlations in NGC 4151},
  author = {Fahey, R. P. and Michalitsianos, A. G. and Kazanas, D.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910048291},
  note = {Source identifier: 19910048291}
}