Picu, M. Noise Study of a Naval Ship in Different Operating Modes on the Danube. Analele Universităţii "Dunărea de Jos" din Galaţi. Fascicula XIV, Inginerie mecanică = Annals of “Dunarea de Jos“ University of Galati. Fascicle XIV, Mechanical Engineering 2014, 21, 55-62.