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E. Cera, P. Colella, T. D'Alessio, C. Di Giuliomaria, S. Paggi, R. Sacco; Real Time Signal Processing for Doppler Ultrasound Current and Wave Meters on Spar Buoys, Proceedings of IEEE OCEANS'91 Conference, pp. 803 - 809, October 1991.
T. D'Alessio, C. Di Giuliomaria, L. Bellani, A. Davoli, S. Paggi, R. Sacco, P. Zampi; An Automated System for Current Measurements Based on Radioranging Waveriders, Proceedings of IEEE OCEANS'91 Conference, pp. 1197 - 1200, October 1991.