Fekti, László Richard, László Székely, Márk Horváth, and Gábor Géczi. “Indoor Radon Activity Concentration Survey of Family Houses in Pest County”. Journal of Central European Green Innovation 10, no. Suppl 1 (December 13, 2022): 111–122. Accessed December 5, 2025. https://journal.uni-mate.hu/index.php/jcegi/article/view/3504.