Smoliar, Natalia, Viktor Bredun, and Olha Toronchenko. “Urban Green Zones Planning Concept and Ecological Functionality (Through the Example of Poltava, Ukraine)”. International Journal of Engineering and Technology 7, no. 3.2 (June 20, 2018): 522–527. Accessed May 13, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/14582.