Waqeed Mahdi Hadif, Sahibin Abd Rahim, Ismail Sahid, and Atiqur Rahman. “Assessment of Heavy Metal Pollution Using the Geo-Accumulation Index (I-Geo), Pollution Load Index (PLI) and Potential Ecological Risk Index (RI) in Paddy Field Soils Adjacent to Ultrabasic Soils”. University of Thi-Qar Journal of agricultural research 9, no. 2 (November 11, 2020): 85–97. Accessed July 23, 2025. https://jam.utq.edu.iq/index.php/main/article/view/108.