@misc{indiciae6d04a6ebae32,
  title = {Test of an orbiting hydrogen maser clock system using laser time transfer},
  author = {Vessot, Robert F. C. and Mattison, Edward M. and Nystrom, G. U. and Decher, Rudolph},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920024142},
  note = {Source identifier: 19920024142}
}