Qian, W., G. Schoenau, and R. Burton. “MEASURED PERFORMANCE EVALUATION OF PID AND NEURAL NET CONTROL OF A HYDRAULICALLY DRIVEN INERTIA LOAD WITH NONLINEAR FRICTION”. International Journal of Fluid Power, vol. 2, no. 1, Mar. 2001, pp. 31-36, https://journals.riverpublishers.com/index.php/IJFP/article/view/645.