HERFERT, Günter. Regional polarisation of demographic development in East Germany — equivalence of living conditions?. Raumforschung und Raumordnung | Spatial Research and Planning, DE, v. 65, n. 5, p. 435–455, 2007. DOI: 10.1007/BF03183833. Disponível em: https://rur.oekom.de/index.php/rur/article/view/1295. Acesso em: 15 aug. 2026.