@misc{indiciae1cd17bafc511,
  title = {Four-dimensional modulation and coding - An alternate to frequency-reuse},
  author = {Wilson, S. G. and Sleeper, H. A. and Srinath, N. K.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19850054502},
  note = {Source identifier: 19850054502}
}