@misc{indiciae239590ef2d3e,
  title = {Radar observations of Apollo},
  author = {Goldstein, R. M. and Jurgens, R. F. and Yeomans, D. K.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19820035946},
  note = {Source identifier: 19820035946}
}