KERSTEN, Jens. Public services and demographic change — A challenge for spatial development and constitutional theory. Raumforschung und Raumordnung | Spatial Research and Planning, DE, v. 64, n. 4, p. 245–257, 2006. DOI: 10.1007/BF03183174. Disponível em: https://rur.oekom.de/index.php/rur/article/view/1383. Acesso em: 26 sep. 2026.