@misc{indiciae5cb65d848a63,
  title = {Very low luminosity active galaxies and the X-ray background},
  author = {Elvis, M. and Soltan, A. and Keel, W. C.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19840065115},
  note = {Source identifier: 19840065115}
}