M. Hassan J, A. Taha AW, A. Oleiwi M. Linear Analysis to Control an Electro-hydraulic System Using Proportional Directional Control Valve. J. eng. sustain. dev. [Internet]. 2009 Jun. 1 [cited 2025 May 3];13(2):128-43. Available from: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1548