Ahmed M. Al-Mahbashi and  Mosleh A. Al-Shamrani and  Muawia Dafalla,  Effect of Temperature on the Water Retention Capacity of Liner Materials.   journal   = {International Journal of Geotechnical and Geological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2019, vol. 151(7). 495 - 499
    [viewed 22 November 2019]. Available from: https://publications.waset.org/pdf/10010571.