@misc{indiciae405d346bb0b7,
  title = {Precision orbit determination for Topex},
  author = {Tapley, B. D. and Schutz, B. E. and Ries, J. C. and Shum, C. K.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900031678},
  note = {Source identifier: 19900031678}
}