@misc{indiciae06867582e0ec,
  title = {Multi-filter spectrophotometry of quasar environments},
  author = {Craven, Sally E. and Hickson, Paul and Yee, Howard K. C.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930017661},
  note = {Source identifier: 19930017661}
}