Muklis, M., H. Safarizki, and W. Budianto. “Application of Eggshell Powder As an Additive Cement on Increasing the Compressive Strength of Papercrete”. ASTONJADRO, vol. 15, no. 1, Mar. 2026, pp. 28-37, doi:10.32832/astonjadro.v15i1.19229.