@misc{indiciaed21c3a2b4ee4,
  title = {An improved error assessment for the GEM-T1 gravitational model},
  author = {Lerch, F. J. and Marsh, J. G. and Klosko, S. M. and Pavlis, E. C. and Patel, G. B. and Chinn, D. S. and Wagner, C. A.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19890016934},
  note = {Source identifier: 19890016934}
}