@misc{indiciaef582b61127fa,
  title = {Single-Frequency GPS Relative Navigation in a High Ionosphere Orbital Environment},
  author = {Conrad, Patrick R. and Naasz, Bo J.},
  year = {2007},
  url = {https://ntrs.nasa.gov/citations/20070014901},
  note = {Source identifier: 20070014901}
}