Phạm, Sơn Lâm, Anh Tú Hoàng, Văn Thư Nguyễn, and Văn Hai Lê. “Research and Design to Integrate Thermal Imaging Objective onto Viewfinder PMK-453”. Journal of Military Science and Technology, no. 81 (August 26, 2022): 168–172. Accessed January 26, 2026. https://jmst.mod.gov.vn/index.php/jmst/article/view/497.