Trung, M. X.; Vân, N. T. Ái; Trinh, N. T. T. ESTABLISH A CALIBRATION EFFICIENCY IN GAMMA SPECTROMETERS AND EVALUATE EFFICIENCY CURVES IN COMMERCIAL SOFTWARE. DLU JOS 2011, 1 (1,2,3,&4), 81-90. https://doi.org/10.37569/DalatUniversity.1.1,2,3,&4.170(2011).