Drăgan, N. 2011. Dynamic calculation of the mechanical transmissions with gears and elastic shafts. Analele Universităţii "Dunărea de Jos" din Galaţi. Fascicula XIV, Inginerie mecanică = Annals of “Dunarea de Jos“ University of Galati. Fascicle XIV, Mechanical Engineering. 18, 1 (Jun. 2011), 23-26.