@misc{indiciae2923a090aada,
  title = {GSFC network operations with Tracking and Data Relay Satellites},
  author = {Spearing, R. and Perreten, D. E.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19840057823},
  note = {Source identifier: 19840057823}
}