Mefleh S. Hamideen,  Environmental Impact Assessment of Ceramic Tile Materials Used in Jordan on Indoor Radon Level.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2022, vol. 181(1). 1 - 4
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10012362.