@misc{indiciae083cf535fec3,
  title = {INMARSAT's personal communicator system},
  author = {Hart, Nick and Haugli, HANS-C. and Poskett, Peter and Smith, K.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19940018315},
  note = {Source identifier: 19940018315}
}