@misc{indiciae13b275281b76,
  title = {Precise GPS ephemerides from DMA and NGS tested by time transfer},
  author = {W. Lewandowski and G. Petit and C. Thomas},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19920024111},
  note = {Source identifier: 19920024111}
}