Sundari, Woro, et al. “Utilization of Coal Fly Ash As a Supplementary Cementitious Material in Shotcrete for Slope Reinforcement in Mining Areas: Utilization of Coal Fly Ash As a Filler in Shotcrete ”. Jurnal Sains Materi Indonesia, vol. 28, no. 1, Oct. 2026, pp. 57-69, doi:10.55981/jsmi.2026.14964.