@misc{indiciae0e630e0b6328,
  title = {Tri-state delta modulation system for Space Shuttle digital TV downlink},
  author = {Udalov, S. and Huth, G. K. and Roberts, D. and Batson, B. H.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19830038512},
  note = {Source identifier: 19830038512}
}