@misc{indiciae013bc176cd7a,
  title = {International GPS Service 2001 - 2002 Technical Reports},
  author = {Gowey, Ken and Neilan, Ruth and Moore, Angelyn},
  year = {2004},
  url = {https://ntrs.nasa.gov/citations/20050192500},
  note = {Source identifier: 20050192500}
}