Thi Ngoc Trang, L., H. Dinh Chuong, and T. Thien Thanh. “Efficiency Calibration for HPGe Detector by Monte Carlo Efficiency Transfer Method”. Science & Technology Development Journal: Natural Sciences, Vol. 3, no. 1, Mar. 2019, pp. 9-17, doi:https://doi.org/10.32508/stdjns.v3i1.712.