@misc{indiciae95ae98993456,
  title = {Digital 8-DPSK Modem For Trellis-Coded Communication},
  author = {Jedrey, T. C. and Lay, N. E. and Rafferty, W.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890000439},
  note = {Source identifier: 19890000439}
}