@misc{indiciae9f369e3d33bf,
  title = {Temperature-Control Apparatus For Hydrogen Maser},
  author = {Vessot, R. F. C. and Mattison, E. M.},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19940000141},
  note = {Source identifier: 19940000141}
}