@misc{indiciae567324184b1c,
  title = {Gravity Field Mapping of Mars with MGS},
  author = {Smith, David E. and Zuber, Maria T. and Lemoine, Frank G.},
  year = {1998},
  url = {https://ntrs.nasa.gov/citations/19990115951},
  note = {Source identifier: 19990115951}
}