Dovhaliuk, Volodymyr, Viktor Mileikovskyi, and . . “New Approach for Refined Efficiency Estimation of Air Exchange Organization”. International Journal of Engineering & Technology 7, no. 3.2 (June 20, 2018): 591–596. Accessed November 24, 2024. https://sciencepubco.com/index.php/ijet/article/view/14596.