@misc{indiciae19742e049e35,
  title = {Hydrogen maser oscillation at 10 K},
  author = {Crampton, S. B. and Jones, K. M. and Souza, S. P.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19850020929},
  note = {Source identifier: 19850020929}
}