Z. Adnan and  M. M. Habib,  The Small Strain Effects to the Shear Strength and Maximum Stiffness of Post-Cyclic Degradation of Hemic Peat Soil.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2017, vol. 129(9). 1192 - 1196
    [viewed 28 February 2020]. Available from: https://publications.waset.org/pdf/10007828.