Masitoh, Ferryati, Alfi Nur Rusydi, and Didik Taryana. “Hydrogeochemistry and Groundwater Quality Assessment of Shallow Groundwater in the Penguluran Basin, East Java, Indonesia”. Indonesian Journal on Geoscience 12, no. 3 (October 14, 2025): 343–365. Accessed October 18, 2025. https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/1009.