@misc{indiciae9df4dfa1f975,
  title = {Interplanetary communications study Final report},
  author = {Cohn, M. and Grimes, D. E. and Littlepage, R. S.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690018516},
  note = {Source identifier: 19690018516}
}