[1]
A. Shahrokhi, M. Adelikhah, S. Chalupnik, E. Kocsis, E. Toth-Bodrogi, and T. Kovács, “Radioactivity of building materials in Mahallat, Iran – an area exposed to a high level of natural background radiation – attenuation of external radiation doses”, Mater. constr., vol. 70, no. 340, p. e233, Nov. 2020.