Karlik, Máté, Zoltán Papp Richárd, and Zsuzsanna Angyal. “Examination of the Heavy Metal Contant in Urban Soils in District XI. In Budapest”. Economica 7, no. 3 (August 6, 2020): 76–83. Accessed December 5, 2025. https://ojs.lib.unideb.hu/economica/article/view/4387.