@misc{indiciae7a69d3c4f8cb,
  title = {Reducing the risk to Mars: The gas core nuclear rocket},
  author = {Howe, S. D. and DeVolder, B. and Thode, L. and Zerkle, D.},
  year = {1998},
  url = {https://ntrs.nasa.gov/citations/19980210311},
  note = {Source identifier: 19980210311}
}