O. Eren and  L. Zakar,  Using Recyclable Steel Material in Tall Buildings.   journal   = {International Journal of Architectural and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2014, vol. 88(4). 387 - 394
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/9997939.