@misc{indiciaeed07bd509a74,
  title = {Evolutionary use of nuclear electric propulsion},
  author = {Hack, K. J. and George, J. A. and Riehl, J. P. and Gilland, J. H.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910025551},
  note = {Source identifier: 19910025551}
}