Tsuchiya, Sojiro, Hironao Yamada, and Takayoshi Muto. 2001. “A PRECISION DRIVING SYSTEM COMPOSED OF A HYDRAULIC CYLINDER AND HIGH-SPEED ON/OFF VALVES”. International Journal of Fluid Power 2 (1):7-16. https://journals.riverpublishers.com/index.php/IJFP/article/view/642.