Shakeshev, M. T., D. Yu. Korulkin, and M. K. Nauryzbaev. “Tannin Quantification in Industrial Waste of Tobacco Production and Selection of Optimal Extraction Parameters”. International Journal of Biology and Chemistry 8, no. 2 (December 27, 2015): 81–84. Accessed December 16, 2024. https://ijbch.kaznu.kz/index.php/kaznu/article/view/195.