@misc{indiciaeac38879154a6,
  title = {Fiber-Optic Frequency-Transfer Link},
  author = {Primas, L. E. and Sydnor, R. L. and Lutes, G. F.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900000330},
  note = {Source identifier: 19900000330}
}