T. A. Muhlis, J. Fajrin, and N. N. Kencanawati, “Optimization of Geopolymer Mortar Performance Using Locally Sourced Precursors: An Experimental and Statistical Approach”, Reswara J. Ris. Ilmu Tek., vol. 4, no. 4, pp. 1224–1237, Sep. 2026, doi: 10.70716/reswara.v4i4.808.