@misc{indiciae4f9abbea029f,
  title = {Mars gravity field error analysis from simulated radio tracking of Mars Observer},
  author = {Smith, D. E. and Lerch, F. J. and Chan, J. C. and Chinn, D. S. and Iz, H. B.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900061701},
  note = {Source identifier: 19900061701}
}