@misc{indiciaed1c79fcb70f3,
  title = {Mars gravity - Additional resolution from Viking Orbiter I},
  author = {Sjogren, W. L. and Wimberly, R. N. and Cain, D. L. and Brenkle, J. P.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19790055285},
  note = {Source identifier: 19790055285}
}