@misc{indiciaea7bd7bb09a45,
  title = {Planetary explorer liquid propulsion study Final report, Jul. 1970 - Jan. 1971},
  author = {Mc Cabe, J. E. and Sanseverd, V. J.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710016944},
  note = {Source identifier: 19710016944}
}