Farhad Abbas Gandomkar and  Mona Danesh,  Fundamental Natural Frequency of Chromite Composite Floor System.   journal   = {International Journal of Structural and Construction Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2015, vol. 106(10). 1335 - 1339
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10002612.