@misc{indiciaeef5ddbcc9a4c,
  title = {Coded multiple chirp spread spectrum system and overlay service},
  author = {Kim, Junghwan and Pratt, Timothy and Ha, Tri T.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19890039398},
  note = {Source identifier: 19890039398}
}