Herfert, Günter. 2003. “Between Gentrification and Downward Spiral: Socio-Spatial Differentiation in Housing Quarters of Large City Regions in Saxony at the End of the 1990’s”. Raumforschung Und Raumordnung | Spatial Research and Planning 61 (3): 170–184. https://doi.org/10.1007/BF03183806.