@misc{indiciae23e6600f154e,
  title = {Guidance simulation and test support for differential GPS flight experiment},
  author = {Geier, G. J. and Loomis, P. V. W. and Cabak, A.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19900000705},
  note = {Source identifier: 19900000705}
}