@misc{indiciae72fce2721c2f,
  title = {System Design for a Nuclear Electric Spacecraft Utilizing Out-of-core Thermionic Conversion},
  author = {Estabrook, W. C. and Phillips, W. M. and Hsieh, T.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19770003198},
  note = {Source identifier: 19770003198}
}