Ghasemlounia, Redvan, and Nasim Sedaghat Herfeh. “Study on Groundwater Quality Using Geographic Information System (GIS), Case Study: Ardabil, Iran”. Civil Engineering Journal 3, no. 9 (October 4, 2017): 779–793. Accessed July 1, 2025. https://www.civilejournal.org/index.php/cej/article/view/409.