@misc{indiciae21483520f58d,
  title = {High precision GPS orbit determination using March 1985 demonstration data},
  author = {Bertiger, W. and Wu, S.-C. and Border, J. S. and Lichten, S. M. and Williams, B. G. and Wu, J.-T.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19860034946},
  note = {Source identifier: 19860034946}
}