SMETANOVÁ, Iveta et al. The results of integration measurements of indoor radon activity concentration in houses in Ružomberok town (Northern Slovakia). Contributions to Geophysics and Geodesy, [S. l.], v. 45, n. 1, p. 41–51, 2015. DOI: 10.1515/congeo-2015-0012. Disponível em: https://journals.savba.sk/index.php/cgg/article/view/5207. Acesso em: 4 feb. 2026.