@misc{indiciae9083241ec7be,
  title = {Simulated terrain mapping with the rotating gravity gradiometer},
  author = {Bell, C. C. and Forward, R. L. and Williams, H. P.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700067552},
  note = {Source identifier: 19700067552}
}