Mohie Eldin Mohamed Afifiy Elmashad,  Using Low Permeability Sand-Fadr Mixture Membrane for Isolated Swelling Soil.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2011, vol. 58(10). 577 - 580
    [viewed 28 January 2021]. Available from: https://publications.waset.org/pdf/10849.