@misc{indiciae051056270c65,
  title = {NERVA nozzle design status report},
  author = {Williams, J. J. and Pickering, J. L. and Ackerman, R. G.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730015942},
  note = {Source identifier: 19730015942}
}