@misc{indiciae868402ed6969,
  title = {Single Frequency GPS Orbit Determination for Low Earth Orbiters},
  author = {Bertiger, Willy and Wu, Sien-Chong},
  year = {1996},
  url = {https://ntrs.nasa.gov/citations/20060035968},
  note = {Source identifier: 20060035968}
}