@misc{indiciaee91e0b1a9c4d,
  title = {Satellite borne gravity gradiometer study},
  author = {Metzger, E. and Jircitano, A. and Affleck, C.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19770007712},
  note = {Source identifier: 19770007712}
}