Ж.И., Рамазанова Н.Е., Токсанбаева С.Т., Инкарова. 2019. “Analysis of the Contamination of Vegetation Zelenovsk District of West Kazakhstan Region”. Eurasian Journal of Ecology 57 (4):12-19. https://bulletin-ecology.kaznu.kz/index.php/1-eco/article/view/948.