@misc{indiciaeac4bdd8ec646,
  title = {Modulator for tone and binary signals},
  author = {Mcchesney, J. R. and Lerner, T. and Fitch, E. J.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19750016909},
  note = {Source identifier: 19750016909}
}