An, Liang, and Nariman Sepehri. “LEAKAGE FAULT DETECTION IN HYDRAULIC ACTUATORS SUBJECT TO UNKNOWN EXTERNAL LOADING”. International Journal of Fluid Power 9, no. 2 (August 1, 2008): 15–25. Accessed April 25, 2024. https://journals.riverpublishers.com/index.php/IJFP/article/view/523.