Axinti, A. and Axinti, G. 2012. Simulation of response in dynamic load of hydraulic actuator systems with cartridges logic elements. Analele Universităţii "Dunărea de Jos" din Galaţi. Fascicula XIV, Inginerie mecanică = Annals of “Dunarea de Jos“ University of Galati. Fascicle XIV, Mechanical Engineering. 19, 2 (Nov. 2012), 91-94.