@misc{indiciae0810f7658f94,
  title = {Measuring Highly Elliptical Orbits Using The GPS},
  author = {Lichten, Stephen M. and Estefan, Jeffrey A.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930000272},
  note = {Source identifier: 19930000272}
}