Eßer, Anke, and David Schmedding. “Tradeable Permits As a Steering Instrument for Goods Traffic in Ecologically Sensitive Areas: The Case of the Brenner Motorway”. Raumforschung und Raumordnung | Spatial Research and Planning 63, no. 6 (November 30, 2005): 400–411. Accessed May 1, 2024. https://rur.oekom.de/index.php/rur/article/view/1422.