@misc{indiciaeacc8cab9fcfd,
  title = {The time keeping system for GPS block IIR},
  author = {Rawicz, H. C. and Epstein, M. A. and Rajan, J. A.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19940006492},
  note = {Source identifier: 19940006492}
}