Hung, Nguyen Van, and Dao Van Doan. 2020. “A Mathematical Model of Interior Ballistics for the Amphibious Rifle When Firing Underwater and Its Validation by Measurement”. <i>Vietnam Journal of Science and Technology</i> 58 (1). Hanoi, VN:92-106. https://doi.org/10.15625/2525-2518/58/1/13605.