Ali A. Sayadi and  Thomas R. Neitzert and  G. Charles Clifton,  Feasibility of a Biopolymer as Lightweight Aggregate in Perlite Concrete.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2016, vol. 114(6). 751 - 761
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/10004635.