@misc{indiciaefbf492ce22c0,
  title = {Spread spectrum communications. Volume 1, 2 \& 3},
  author = {Simon, M. K. and Levitt, B. K. and Omura, J. K. and Scholtz, R. A.},
  year = {1985},
  url = {https://ntrs.nasa.gov/citations/19870022822},
  note = {Source identifier: 19870022822}
}