@misc{indiciaeea682da8ce4d,
  title = {Fission Fragment Rocket Engine (FFRE) Technology and Status},
  author = {Werka, R. and Clark. R. and Sheldon, R. and Percy, T.},
  year = {2014},
  url = {https://ntrs.nasa.gov/citations/20150002595},
  note = {Source identifier: 20150002595}
}