@misc{indiciaeae88107b16d5,
  title = {Carrier synchronization techniques for unbalanced QPSK signals. I},
  author = {Braun, W. R. and Lindsey, W. C.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780043094},
  note = {Source identifier: 19780043094}
}