Huynh, Chuong, Nguyen Vo, Trang Le, Linh Nguyen, Tuyet Tran, and Thanh Tran. 2017. “The Effect of the Diameter of the Detector Collimator on Saturation Thickness in Gamma Scattering Measurement”. Science & Technology Development Journal: Natural Sciences 1 (T3), 68-78. https://doi.org/https://doi.org/10.32508/stdjns.v1iT3.466.