@misc{indiciae28cbaadbbc99,
  title = {Interim results from the characterization testing of the Engineering Development (EDM) rubidium clocks for satellite applications},
  author = {Powers, Edward D., Jr. and Danzy, Fredrick},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910016468},
  note = {Source identifier: 19910016468}
}