He, Liwei, Bin Li, Ping Ning, and Xiao Gong. “Optimization of EDTA Enhanced Soil Washing on Multiple Heavy Metals Removal Using Response Surface Methodology”. Journal of Environmental Engineering and Landscape Management 26, no. 4 (November 15, 2018): 241-250. Accessed March 29, 2024. https://journals.vilniustech.lt/index.php/JEELM/article/view/6121.