@misc{indiciaed868121a19c1,
  title = {Transient engine simulation program. NERVA program},
  author = {Hutchison, H. and Madsen, W. and Steiger, R.},
  year = {1964},
  url = {https://ntrs.nasa.gov/citations/19680007802},
  note = {Source identifier: 19680007802}
}