KÜHNE, Olaf. Current evolutions of centrality in the federal state Saarland — first results of an empirical study. Raumforschung und Raumordnung | Spatial Research and Planning, DE, v. 66, n. 5, p. 450–459, 2008. DOI: 10.1007/BF03183188. Disponível em: https://rur.oekom.de/index.php/rur/article/view/1233.. Acesso em: 3 may. 2024.