@misc{indiciae43a1d9ae76cc,
  title = {Cathode durability tests in mercury electron- bombardment ion thrustors},
  author = {Pawlik, E. V. and Reader, P. D.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670021895},
  note = {Source identifier: 19670021895}
}