1. Achilli V, Baldi P, De Sabata V, Focardi S, Palmonari F, Pedrielli F, (1990) A measurement of the gravitational constant G in the 10-100 range distance. Frontiers in Particle Physics, Proceedings of the XII Warsaw Symposium on Elementary Particle Physics, Warsaw, Poland. Ed. Z. Ajduk et al, Word Scientific, pp 589–594.
2. Achilli V, Baldi P, Focardi S, Gasperini P, Palmonari F, Sabadini R (1991) The Brasimone experiment: a measurement of the Gravitational constant G in the 10–100 m range of distance. Proceedings of the Workshop: Non Tidal Gravity Changes. Walferdange, Luxemburg. Cahiers du Centre Europèen de Gèodynamique et de Sèismologie, vol 3, pp 241–246.
3. Barta G, Hajosy A, Varga P (1985) Possibilities for the Absolute Calibration of Recording Gravimeters. Proceedings of the Tenth International Symposium on Earth Tides, Madrid, Spain, pp 27–34.
4. Goodkind JM (1991) The superconducting gravimeters: principle of operation, current performance and future prospects. Proceedings of the Workshop: Non Tidal Gravity Changes. Walferdange, Luxemburg. Cahiers du Centre Europèen de Gèodynamique et de Sèismologie, vol 3, pp 81–90.
5. Hinderer J, Florsch N, Machinen J, Legros H, and Faller JE (1991) On calibration of a superconducting gravimeter using absolute gravity measurements. Geophys. J. Int. 106:491–497.