Tazitdinova, R.M., R.R. Beisenova, A.I. Grigoryev, and O.P. Issayenko. “Contamination of Soil With Heavy Metals in Industrial Districts of Kokshetau”. Fundamental and Experimental Biology 94, no. 2 (June 30, 2019): 93–98. Accessed October 9, 2025. https://feb.buketov.edu.kz/bmg-vestnik/article/view/497.