@misc{indiciae073d62bb33cf,
  title = {Gravity model comparison using GEOS-1 long arc orbital solutions},
  author = {Lerch, F. J. and Marsh, J. G. and Oneill, B.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690014588},
  note = {Source identifier: 19690014588}
}