@misc{indiciae3a8e254fba46,
  title = {Comet and close-approach asteroid mission study. Volume 4 - Spacecraft system evaluation Final report, 2 Jul. 1964 - 2 Jan. 1965},
  author = {Giddis, A.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19660005770},
  note = {Source identifier: 19660005770}
}