Shi, Jin-yan, and Ke-chang Zhang. “Study on Dynamic Characteristics of Negative Flow Control Variable Axial Piston Pump for Hydraulic Excavator”. International Journal of Fluid Power 22, no. 3 (September 15, 2021): 393–408. Accessed September 15, 2024. https://journals.riverpublishers.com/index.php/IJFP/article/view/8667.