LAMMERS, Konrad. EU regional policy between integration, regional convergence and economic growth. Raumforschung und Raumordnung | Spatial Research and Planning, DE, v. 65, n. 4, p. 288–300, 2007. DOI: 10.1007/BF03183017. Disponível em: https://rur.oekom.de/index.php/rur/article/view/1306. Acesso em: 15 aug. 2026.