@misc{indiciaea7aaad6843a6,
  title = {The Spaceflight and Tracking Data Network data handling system in the 1980's},
  author = {Dickinson, W. B.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19760057723},
  note = {Source identifier: 19760057723}
}