@misc{indiciae90c6d3537bae,
  title = {Operational experiences with unpowered terminal area instrument approaches},
  author = {Gee, S. W. and Kock, B. M. and Schofield, B. L.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700054349},
  note = {Source identifier: 19700054349}
}