Japar, S., and F. Kurniawan. “Lightweight Concrete With Mixed Foam Agent, Polymer and Bonding to Reach 300 Kg/Cm²”. IJIEEB International Journal of Integrated Education, Engineering and Business EISSN 2615-1596 PISSN 2615-2312, Vol. 3, no. 1, July 2020, pp. 55-63, doi:10.29138/ijieeb.v3i1.1073.