@misc{indiciae4d989ecbc344,
  title = {Requirements for airborne vector gravimetry},
  author = {Schwarz, K. P. and Colombo, O. and Hein, G. and Knickmeyer, E. T.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19930071979},
  note = {Source identifier: 19930071979}
}