@misc{indiciae85e5d7a00b07,
  title = {Digital second-order phase-locked loop},
  author = {Holes, J. K. and Carl, C. and Tegnelia, C. R.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740004774},
  note = {Source identifier: 19740004774}
}