Dinh Chuong, H., Minh Sang, T., Gia Thien, L., Huyen, V., & Thien Thanh, T. (2020). Combination of the gamma emission tomography and the virtual point-detector methods for calculating radioactive waste drum by non-destructive assays. Science & Technology Development Journal: Natural Sciences, 2(6), 214-221. https://doi.org/https://doi.org/10.32508/stdjns.v2i6.884