Diez-Pisonero, R., C. Gago-García, and J. A. Córdoba Ordóñez. “Beyond Global Nodes and Economic Indicators in the Evaluation of the World-System of Cities”. DIE ERDE – Journal of the Geographical Society of Berlin, Vol. 151, no. 1, Feb. 2020, pp. 1-15, doi:10.12854/erde-2020-425.