Ruan, J., Ukrainetz, P. R. and Burton, R. (2000) “FREQUENCY DOMAIN MODELLING AND IDENTIFICATION OF 2D DIGITAL SERVO VALVE”, International Journal of Fluid Power, 1(2), pp. 49–58. Available at: https://journals.riverpublishers.com/index.php/IJFP/article/view/651 (Accessed: 16 July 2024).