@misc{indiciaeb47808c5c485,
  title = {Electron emissive surface electric field meter.},
  author = {Cole, R. K. and Ogansa, H. S. and Sellen, J. M., Jr.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670057795},
  note = {Source identifier: 19670057795}
}