@misc{indiciaef97d1c9e7f76,
  title = {FFRE Powered Spacecraft},
  author = {Werka, Robert O. and Clark, Rod and Sheldon, Robert and Percy, Thomas},
  year = {2012},
  url = {https://ntrs.nasa.gov/citations/20130001841},
  note = {Source identifier: 20130001841}
}