Franz, Peter. “How Well Perform the Large East German Cities in Comparison to West German Cities? Data Concerning Their Economic and Financial Situation”. Raumforschung und Raumordnung | Spatial Research and Planning 61, no. 3 (March 31, 2003): 160–169. Accessed July 15, 2024. https://rur.oekom.de/index.php/rur/article/view/1616.