@misc{indiciaee53f604846e7,
  title = {Nonelectric cathode heating.},
  author = {Beggs, J. E. and Conway, E. C. and Kelley, M. J. and Wilmarth, R. W.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690046759},
  note = {Source identifier: 19690046759}
}