Sarka Keprdova and  Nikol Zizkova,  Lightweight Materials for Building Finishing.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2014, vol. 95(11). 1140 - 1143
    [viewed 21 October 2019]. Available from: https://publications.waset.org/pdf/9999710.