Bobanto, M. D., Pandara, D. P., Ferdy, F., Tiwow, V. A., Aritonang, H., Tanauma, A., & Todingan, R. (2023). Effect of Calcination on the Ash from Lokon Volcano and Its Potentially Sustainable Binder Material. International Journal on Advanced Science, Engineering and Information Technology, 13(6), 2067–2072. https://doi.org/10.18517/ijaseit.13.6.18900