@misc{indiciaea3f3c1290b5c,
  title = {RPVs - Exploring civilian applications},
  author = {Gregory, T. J. and Bailey, R. O. and Nelms, W. P.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740057736},
  note = {Source identifier: 19740057736}
}