Truong Hong Vo Tuan Kiet, Nguyen Thi Kim Thoa. “Technical Efficiency of Mango in Vietnam”. International Journal of Advanced Science and Technology 29, no. 11s (June 1, 2020): 748 - 755. Accessed September 29, 2021. https://sersc.org/journals/index.php/IJAST/article/view/20044.