Nguyen, H. T. and Truong, C. G. (2019) “Computation of the Root Dedendum of the Internal Gear in a Hypogetoror Pump with Prescribed Flow Rate and Rotational Speed”, Old Journal, (133), pp. 21–27. Available at: https://jst.vn/index.php/old/article/view/663 (Accessed: 2 August 2025).