1. Hofmeyer, G.M. and Affleck, C.A. [1994] “Rotating Accelerometer Gradiometer”, US Patent 5,357,802.
2. Lee, J.B. et al [2006] “First test survey results from the Falcon™ helicopter-borne airborne gravity gradiometer system”, ASEG abstracts.
3. Lumley, J. M. et al [2001] “A superconducting gravity gradiometer tool for exploration.” Gradiometry workshop SEG 2001.
4. Main, B. [2006] “Noise effects on the resolution of the GEDEX AGG”, ASEG abstracts.
5. Metzger, E.H. [1982] “Development experience of gravity gradiometer system”, IEEE PLANS 82, 323-332.