@misc{indiciaebacb82d360a0,
  title = {Combinatorial FSK modulation for power-efficient high-rate communications},
  author = {Wagner, Paul K. and Vanderaar, Mark J. and Budinger, James M.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910069085},
  note = {Source identifier: 19910069085}
}