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2. The Hydraulic Trainer Volume 2—Proportional and Servo Valve Technology;Rexroth,1986
3. Hydraulic Components—RE 00101/01.91;Rexroth,1991
4. Modelling and Simulation of Hydraulic Components and Systems;Kaliafetis,1993
5. Design of a hydraulic-mechanical pressure control of variable displacement pumps;Backe,1988