@misc{indiciaef8d0b830e2ee,
  title = {The nuclear shuttle for interorbital and transplanetary applications},
  author = {Holl, R. J. and Johnson, K. P.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700058396},
  note = {Source identifier: 19700058396}
}