@misc{indiciaeb28bcd17843c,
  title = {Gradio: Project proposal for satellite gradiometry},
  author = {Balmino, G. and Barilier, F. and Bernard, A. and Bouzat, C. and Riviera, G. and Runavot, J.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19820012732},
  note = {Source identifier: 19820012732}
}