@misc{indiciae193ac5419027,
  title = {Comet and close approach asteroid mission study final report},
  author = {Elsbree, F. and Jensen, R. and Moore, G. O. and Savides, J.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19650023587},
  note = {Source identifier: 19650023587}
}