Бахарева, Анна Юрьевна. “Mathematical Make an Inventory of Chandge Biological Oxidation Concentration of Methane”. Eastern-European Journal of Enterprise Technologies 4, no. 6(52) (December 26, 2011): 4–5. Accessed July 17, 2024. https://journals.uran.ua/eejet/article/view/1412.