Shmyrin, A.M, N.M Mishachev, and V.V Semina. “Hierarchical Neighborhood Models for Ventilation System”. International Journal of Engineering and Technology 7, no. 3.5 (July 7, 2018): 24–27. Accessed February 25, 2026. https://www.sciencepubco.com/index.php/IJET/article/view/15194.