@misc{indiciae37b3a0a0187c,
  title = {Double-Referenced, Pulsed, Phase-Locked Loop - DRP2L2},
  author = {Heyman, J. S. and Stone, F. D.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870000007},
  note = {Source identifier: 19870000007}
}