WASET
    Ali A. Ahmed and  Mohammed I. Hussein,  Natural Radioactivity Measurements of Basalt Rocks in Sidakan District Northeastern of Kurdistan Region-Iraq.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2011, vol. 50(2). 66 - 73
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/3947.