@misc{indiciaefbbef1646b5a,
  title = {Minimizing selective availability error on Topex GPS measurements},
  author = {Wu, S. C. and Bertiger, W. I. and Wu, J. T.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900065964},
  note = {Source identifier: 19900065964}
}