Dehaen2, Talgat S. Seitembetov1,3, Amankul J. Seitembetova3, Anastassiya A. Mashentseva1*, Wim. “Comparison of the Antioxidant Activity of the Different Betula Pendula Roth. Extracts from Northern Kazakhstan”. Journal of Phytology 3, no. 1 (January 19, 2011). Accessed May 19, 2024. https://updatepublishing.com/journal/index.php/jp/article/view/2211.