@misc{indiciae9f2d573a4ce3,
  title = {GPS-based satellite tracking system for precise positioning},
  author = {Yunck, T. P. and Melbourne, W. G. and Thornton, C. L.},
  year = {1985},
  url = {https://ntrs.nasa.gov/citations/19850060310},
  note = {Source identifier: 19850060310}
}