Igberase, Ephraim. “Retraction Note: The Adsorption of Pb2+ and Ni2+ Ions Utilizing Modified Chitosan Beads: A Response Surface Methodology and Artificial Neural Network Modelling Study”. EQA - International Journal of Environmental Quality 65 (January 1, 2025): 97. Accessed November 21, 2024. https://eqa.unibo.it/article/view/20311.