Pham Ngoc Thang, and Bui Thi Kim Thoa. “ERROR REDUCTION IN MEASUREMENT DEVICE OF SUBTRACTION OF TWO NON-ELECTRIC QUANTITIES BY STRUCTURE OF TWO TIMES INTERGAL METHOD”. UTEHY Journal of Science and Technology 37 (March 31, 2023): 73-78. Accessed February 22, 2024. http://tapchi.utehy.edu.vn/index.php/jst/article/view/590.