Hung, Nguyen Van. “Prediction of the Distribution and Effect of Diameters of the Cylinder and the Piston Post-Manufacture on the Operation of Gas-Operated Automatic Rifles”. <i>Vietnam Journal of Science and Technology</i> 61, no. 2 (April 17, 2023): 310–322. Accessed January 10, 2026. https://vjs.ac.vn/jst/article/view/16627.