H. Hendrayana, I. A. Riyanto, N. Ismayuni, A. Nuha, A. S. Muhammad, and A. Fadillah, “Groundwater quality assessment in different volcanic rocks using water quality index in the tropical area, Indonesia”, J. Degrade. Min. Land Manage., vol. 11, no. 4, pp. 6225–6235, Jul. 2024.