V. Enin, D. “Research and Analysis on Accessibility of Small Populations to the Alternated and Undergraound Pedestrian Transitions on Automobile Roads”. International Journal of Engineering & Technology 7, no. 4.25 (November 30, 2018): 232–235. Accessed May 5, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/26929.