@misc{indiciaef9402f507049,
  title = {The NASA SETI sky survey - Recent developments},
  author = {Klein, Michael J. and Gulkis, Samuel and Olsen, Edward T. and Renzetti, Nicholas A.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19890030481},
  note = {Source identifier: 19890030481}
}