@misc{indiciae4fb6d09a6d81,
  title = {Gravity model comparison using GEOS 1 long- arc orbital solutions},
  author = {Lerch, F. J. and Marsh, J. G. and Oneill, B.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690018034},
  note = {Source identifier: 19690018034}
}