@misc{indiciaefdb717926f5c,
  title = {Global Interconnectivity Between Mobile Satellite and Terrestrial Users: Call Signalling Issues and Challenges},
  author = {Estabrook, Polly and Moon, Todd and Spade, Rob},
  year = {1996},
  url = {https://ntrs.nasa.gov/citations/20060035924},
  note = {Source identifier: 20060035924}
}