@misc{indiciae21dde353d8d1,
  title = {Computerized performance mapping of a thermionic converter with oriented tungsten electrodes},
  author = {Brietwieser, R. and Manista, E. J. and Smith, A. L.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19700038829},
  note = {Source identifier: 19700038829}
}