“Optimization of Piper Trilinier Diagram Using Lithium Isotope Systematics: An Application for Detecting the Contribution of Geothermal Water from Aso Caldera After Earthquake 2016 in Kumamoto Aquifer, Japan”. Indonesian Journal of Science and Technology 10, no. 1 (July 8, 2025): 159–170. Accessed July 15, 2025. https://ejournal.kjpupi.id/index.php/ijost/article/view/412.