N. Hauk, The influence of the hydraulic fluid compressibility on the kinematics of mechanism actuated with hydraulic cylinders, Analele Universităţii "Dunărea de Jos" din Galaţi. Fascicula XIV, Inginerie mecanică = Annals of “Dunarea de Jos“ University of Galati. Fascicle XIV, Mechanical Engineering, Bd. 22, Nr. 1, S. 17-20, Juli 2015.