Minh Tri, V., Ngoc Quang, U., Ton Dam, D., Anh Dung, T., & Minh Hai, N. (2005). ON THE PROBLEM OF RANDOMLY CHECKING IMPORT - EXPORT GOODS : SMALL SAMPLE CASE. VNUHCM Journal of Science and Technology Development, 8(7), 18-24. https://doi.org/https://doi.org/10.32508/stdj.v8i7.3036