D. S. Wiyanti, T. D. Laksono, and A. Barkah, “TINJAUAN PENGGUNAAN ABU SISA PEMBAKARAN BATU BARA PABRIK DILEM TERHADAP KUAT TEKAN BETON”, Journal Technology of Civil, Electrical, Mechanical, Geology, Mining, and Urban Design, vol. 5, no. 2, pp. 9-18, Dec. 2020.