Lezhnina, M.G., M.V. Belousov, Khanina М.А., Podolina Е.А., N.M. Potemkina, and A.P. Rodin. “Patterns in the Distribution of Chemical Elements in Birch Leaves”. Fundamental and Experimental Biology 11329, no. 1 (March 13, 2024): 79–86. Accessed October 24, 2025. https://feb.buketov.edu.kz/bmg-vestnik/article/view/665.