Development of full spectrum analysis (FSA) to analyze the gamma backscattering on concrete - Luong, Tung; Do, Vien; Huynh, Chuong; Nguyen, Da; Tran, Tuyet; Nguyen, Linh; Truong, Loan; Le, Hao; Trinh, Lang (VNUHCM Journal of Natural Sciences, 2017)