F. Achouri and  K. Chouicha,  A Methodological Test to Study the Concrete Workability with the Fractal Model.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2015, vol. 100(4). 570 - 576
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10002045.