The possibilities of increasing efficiency and confidence of the calculations for hydraulic cylinders provided with cushioning system at end of race - Hauk, Niculai (Analele Universităţii "Dunărea de Jos" din Galaţi. Fascicula XIV, Inginerie mecanică = Annals of “Dunarea de Jos“ University of Galati. Fascicle XIV, Mechanical Engineering, 2012)