@misc{indiciae59959392ad6d,
  title = {Mars gravity field based on a short-arc technique},
  author = {Sjogren, W. L. and Lorell, J. and Wong, L. and Downs, W.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19750054624},
  note = {Source identifier: 19750054624}
}