@misc{indiciaeab7dce9bd6b0,
  title = {Coded spread spectrum digital transmission system design study},
  author = {Heller, J. A. and Odenwalder, J. P. and Viterbi, A. J.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740019511},
  note = {Source identifier: 19740019511}
}