HOLZ-RAU, Christian; SCHEINER, Joachim. Road Traffic Safety in North Rhine-Westphalia Districts: Where Do We Live Most Safely?. Raumforschung und Raumordnung | Spatial Research and Planning, DE, v. 68, n. 5, p. 357–371, 2010. DOI: 10.1007/s13147-010-0047-1. Disponível em: https://rur.oekom.de/index.php/rur/article/view/901.. Acesso em: 5 may. 2024.