@misc{indiciaef3f78e85996c,
  title = {A phase lock loop system with a modulo 2n pi phase detector},
  author = {Lindenlaub, J. C. and Uhran, J. J.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19670007604},
  note = {Source identifier: 19670007604}
}