Linear Analysis to Control an Electro-hydraulic System Using Proportional Directional Control Valve. Journal of Engineering and Sustainable Development, [S. l.], v. 13, n. 2, p. 128–143, 2009. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1548.. Acesso em: 3 jul. 2024.