@misc{indiciaeec9cb8479544,
  title = {Vapor-filled thermionic converters final report},
  author = {Fendley, J. R., Jr. and Hernqvist, K. G. and Levine, J. D.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19650017027},
  note = {Source identifier: 19650017027}
}