Schmitt, Peter, Kati Volgmann, Angelika Münter, and Mitchell Reardon. “Unpacking Polycentricity at the City-Regional Scale: Insights from Dusseldorf and Stockholm”. European Journal of Spatial Development 13, no. 4 (December 1, 2015): 26. Accessed May 6, 2025. http://www.oimplantology.org/index.php/EJSD/article/view/215.