Srividhya, B., V. Raj, and R. Subramanian. “Determination of Catechins and Antioxidant Properties of Commercial Green and Black Teas”. Asian Journal of Chemistry 23, no. 10 (August 2, 2011): 4603–4605. Accessed April 15, 2025. https://asianpubs.org/index.php/ajchem/article/view/10906.