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2. See for instanceE. Amaldi andG. Pizzella:The search for gravitational waves, inRelativity, Quanta and Cosmology in the Development of the Scientific Thought of A. Einstein (Academic Press, New York, N.Y., 1979).
3. M. Aglietta et al.: Analysis of the data recorded by the Mont-Blanc neutrino detector and by the Maryland and Rome gravitational wave detectors during SN1987A, presented atLa Thuile Workshop (Feb. 1988).
4. M. Aglietta, G. Badino, G. Bologna, C. Castagnoli, A. Castellina, V. L. Dadykin, W. Fulgione, P. Galeotti, F. F. Kalchukov, V. B. Korkchaguin, P. V. Kortchaguin, A. S. Malguin, V. G. Ryassny, O. G. Ryazhskaya, O. Saavedra, V. P. Talochkin, G. Trinchero, S. Vernetto, G. T. Zatsepin andV. F. Yakushev:Europhys. Lett,3, 1315 (1987).
5. R. Ruffini andJ.A. Wheeler:Relativistic cosmology and space platforms, inProceedings of the Conference on Space Physics (ESRO, Paris, France, 1971).