Muhlis, Tryandi Adi, et al. “Optimization of Geopolymer Mortar Performance Using Locally Sourced Precursors: An Experimental and Statistical Approach”. RESWARA: Jurnal Riset Ilmu Teknik, vol. 4, no. 4, Sept. 2026, pp. 1224-37, https://doi.org/10.70716/reswara.v4i4.808.