@misc{indiciae553545a71e68,
  title = {NUCLEAR ROCKETS FOR UNMANNED MISSIONS},
  author = {Johnson, P. G. and Lietzke, A. F. and Rom, F. E.},
  year = {1962},
  url = {https://ntrs.nasa.gov/citations/19630014486},
  note = {Source identifier: 19630014486}
}