Gee-Cheol Kim and  Joo-Won Kang,  Calculation of Voided Slabs Rigidities.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2012, vol. 65(5). 342 - 345
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/4086.