Borghi, M., Milani, M. and Paoluzzi, R. (2005) “INFLUENCE OF NOTCH SHAPE AND NUMBER OF NOTCHES ON THE METERING CHARACTERISTICS OF HYDRAULIC SPOOL VALVES”, International Journal of Fluid Power, 6(2), pp. 5–18. Available at: https://journals.riverpublishers.com/index.php/IJFP/article/view/568 (Accessed: 3 June 2026).