Ebadi, A.G., S. Zare, M. Mahdavi, and M. Babaee. “Study and Measurement of Pb, Cd, Cr and Zn in Green Leaf of Tea Cultivated in Gillan Province of Iran”. Pakistan Journal of Nutrition 4, no. 4 (June 15, 2005): 270–272. Accessed July 1, 2025. https://pjnonline.org/pjn/article/view/255.