Ngoc Quang, U., T. Anh Dung, N. Minh Hai, N. Duc Phuong, and P. Trong Nghia. “ON THE RELIABILITY OF LIFE INSURRANCE PROBLEM”. VNUHCM Journal of Science and Technology Development, Vol. 11, no. 6, June 2008, pp. 5-12, doi:https://doi.org/10.32508/stdj.v11i6.2644.