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2. MTS Systems, Product Specification for Hydraulic Actuators,1984
3. Carl Schenck, Technogramme, Hydropuls System, no. p2701/2e (Carl Schenck AG., F.R.G.).
4. Instron, 3390 Series Hydraulic Actuators (Instron Ltd., U.K.).
5. Analysis, Synthesis and Design of Hydraulic Servo Systems and Pipelines;Viersma,1980