HOYLER, Michael. External Relations of German Cities Through Intra-firm Networks—A Global Perspective. Raumforschung und Raumordnung | Spatial Research and Planning, DE, v. 69, n. 3, p. 147–159, 2011. DOI: 10.1007/s13147-011-0100-8. Disponível em: https://rur.oekom.de/index.php/rur/article/view/785.. Acesso em: 15 jul. 2024.