Dinh Chuong, H.; Minh Sang, T.; Gia Thien, L.; Huyen, V.; Thien Thanh, T. 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 2020, 2, 214-221.