EL-FARRASH, A. H.; YOUSEF, H. A.; ABU EL-ALA, A.; MAGDY, A. Assessment of radon level in soil samples from Manzala Lake East Nile Delta, Egypt using passive technique. International Journal of Scientific Reports, [S. l.], v. 2, n. 12, p. 312–318, 2016. DOI: 10.18203/issn.2454-2156.IntJSciRep20164308. Disponível em: https://www.sci-rep.com/index.php/scirep/article/view/242. Acesso em: 12 feb. 2026.