Grigorescu, L. and Diaconescu, I. 2011. Transducer with phase modulation and adjustable sensitivity. Analele Universităţii "Dunărea de Jos" din Galaţi. Fascicula XIV, Inginerie mecanică = Annals of “Dunarea de Jos“ University of Galati. Fascicle XIV, Mechanical Engineering. 18, 2 (Nov. 2011), 15-18.