Piotr, Dubicki, and Kulyk Piotr. “Green Conceptions for the Development of Cities in the Light of a Sustainable Development Paradigm”. New Trends and Issues Proceedings on Humanities and Social Sciences 6, no. 3 (September 18, 2019): 1–7. Accessed May 5, 2024. https://un-pub.eu/ojs/index.php/pntsbs/article/view/4330.