Tuiebayeva, A. M., M. M. Sergazina, M. B. Alimzhanova, and Zh. S. Mukataeva. “Determination of the Chemical Composition of Tea by Modern Physico-Chemical Methods: A Review”. International Journal of Biology and Chemistry 11, no. 1 (August 29, 2018): 142–152. Accessed April 26, 2024. https://ijbch.kaznu.kz/index.php/kaznu/article/view/309.