EUROPOLIS Working Paper 6 in the N.U.R.E.C. series deals with various aspects of urban systems. The fact that urban systems are an evergreen in comparative urban research is hardly surprising given that in the European Union, for example, 80 % oft the population live in urban systems whilst the global urbanization rate is approx. 50 %.
Uwe Neumann and Eleftheria Beuels-Kefaloukou, N.U.R.E.C. Institute Duisburg e.V., Germany
Kornelia Miklis and Karl-Heinz Kien, Office for Statistics, Urban Research and European Affairs, City of Duisburg, Germany
Domenico Squillacioti, Comune di Pisa, Ufficio Statistica, Italy
Angelika Kowalski, Office for Statistics, Urban Research and European Affairs, City of Duisburg, Germany