@misc{indiciae60c56b37e14b,
  title = {An Historical Perspective of the NERVA Nuclear Rocket Engine Technology Program},
  author = {Robbins, W. H. and Finger, H. B.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910017902},
  note = {Source identifier: 19910017902}
}