SZEPESSY, Barna. GAMMA-REFLECTION DENSITOMETER FOR THE QUALIFICATION OF CONCRETE SHIELDING Periodica Polytechnica Electrical Engineering, [S. l.], v. 26, n. 1-2, p. 145–152, 1982. Disponível em: https://pp.bme.hu/ee/article/view/4752. Acesso em: 19 may. 2024.