GREIVING, Stefan; FLEX, Florian; TERFRÜCHTE, Thomas. Comparative Study on the Central Place Concepts of the GermanLänder and Recommendations for their Further Development. Raumforschung und Raumordnung | Spatial Research and Planning, DE, v. 73, n. 4, p. 285–297, 2015. DOI: 10.1007/s13147-015-0357-4. Disponível em: https://rur.oekom.de/index.php/rur/article/view/615. Acesso em: 15 aug. 2026.