Stüben, Doris, and Stefan Norra. 2000. “A Geochemical View of Complex Analyses of Fluxes of Harmful Substances As a Basis for Sustainable Urban Planning”. Raumforschung Und Raumordnung | Spatial Research and Planning 58 (2-3). DE:103–129. https://doi.org/10.1007/BF03185183.