@misc{indiciaea557a7b1a455,
  title = {Phase-ambiguity resolution for QPSK modulation systems. Part 2: A method to resolve offset QPSK},
  author = {Nguyen, Tien Manh},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890016010},
  note = {Source identifier: 19890016010}
}