@misc{indiciae449e0aa0dfa3,
  title = {Coating a Hydrogen-Maser Chamber With CF4},
  author = {Vessot, Robert F. C. and Mattison, Edward},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870000460},
  note = {Source identifier: 19870000460}
}