1. Berger, M.J., Hubbell, J.H., Seltzer, S.M., Coursey, J.S., Zucker, D.S., 1999. XCOM: Photon Cross Section Database (version 1.2). National Institute of Standards and Technology, Gaithersburg, MD.
2. DETEFF: an improved Monte Carlo computer program for evaluating the efficiency in coaxial gamma-ray detectors;Cornejo Díaz;Nucl. Instrum. Methods Phys. Res. A,2008
3. ICRU, 1994. Gamma-Ray Spectrometry in the Environment. ICRU REPORT 53, 17.
4. IAEA, 2007. Report on the IAEA-CU-2006-04 ALMERA Proficiency Test on the Determination of Gamma Emitting Radionuclides IAEA/AL/170.
5. IAEA, 2008. Benchmarking Calibration for Low-Level Gamma Spectrometric Measurements of Environmental Samples. IAEA-CRP-1471.