The value of cities as areas of concentration of the new knowledge-based economy: A study for the metropolitan region of Barcelona. Ciudades, [S. l.], n. 17, p. 41–63, 2017. DOI: 10.24197/ciudades.17.2014.41-63. Disponível em: https://revistas.uva.es/index.php/ciudades/article/view/1142. Acesso em: 27 nov. 2025.