Kananke, T.C., J. Wansapala, and A. Gunaratne. “Effect of Processing Methods on Heavy Metal Concentrations in Commonly Consumed Green Leafy Vegetables Available in Sri Lankan Market”. Pakistan Journal of Nutrition 14, no. 12 (November 15, 2015): 1026–1033. Accessed August 26, 2025. https://pjnonline.org/pjn/article/view/2257.