Szőke, Andrea, Dániel Szabó, Edit Forró, and László Gerzson. 2013. “Developing Hungarian Cadastral Database of Green Roofs and the Trends in Green Roof Construction Industry”. Review on Agriculture and Rural Development 2 (1):455-60. https://ojs.bibl.u-szeged.hu/index.php/rard/article/view/13354.