@misc{indiciae6ea5da3de706,
  title = {Doubly-Differenced Measurements for Orbit Determinations},
  author = {Wu, S. C. and Ondraski, V. J.},
  year = {1985},
  url = {https://ntrs.nasa.gov/citations/19850000040},
  note = {Source identifier: 19850000040}
}