Design and Performance Evaluation of a "Fixed-Point" Spar Buoy Equipped with a Piezoelectric Energy Harvesting Unit for Floating Near-Shore Applications. - Damiano Alizzio; Marco Bonfanti; Nicola Donato; Carla Faraci; Giovanni Maria Grasso; Fabio Lo Savio; Roberto Montanini; Antonino Quattrocchi (Sensors, 2021)