H. M. N. L. Handagiripathira,  Radioactivity Assessment of Sediments in Negombo Lagoon Sri Lanka.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2021, vol. 173(5). 151 - 158
    [viewed 09 May 2024]. Available from: https://publications.waset.org/pdf/10012017.