Quyên. CASE STUDY OF RAIN PARAMETERS IN HANOI BY THE DROP SIZE MEASUREMENT EQUIPMENT THAT BASED ON OPTICAL PRINCIPLE. J. Mil. Sci. Technol. [Internet]. 2020 Dec. 14 [cited 2026 Mar. 12];(70):45-53. Available from: https://jmst.mod.gov.vn/index.php/jmst/article/view/110