E. ALYATIKAH, Siswo, Riaa Safitri, Tety Wahyuningsih Manurung, and Rendy Muhamad Iqbal, “Chemical characteristic of Fly ash and Bottom ash as potential source for synthesis of Aluminosilicate-based materials”, rjna, vol. 2, no. 2, pp. 160–166, Oct. 2022.