Oleynik, Aleksandr, and Tamara Airapetian. “Oxygen Regime in Research on the Work of Plugflow Aeration Tanks With Fixed Biomasses”. Eastern-European Journal of Enterprise Technologies 4, no. 10 (88) (August 22, 2017): 4–11. Accessed May 15, 2024. https://journals.uran.ua/eejet/article/view/107127.