Domínguez Castro, Luis and Enrique José Varela Álvarez. “Building Europolis on the Basis of Local ‘Informal’ Cooperation in European Cross-Border Spaces: The Case of RIET”. Geopolítica(s). Revista de estudios sobre espacio y poder, vol. 6, vol. 6, no. 2, 2015, pp. 225-46, doi: https://doi.org/10.5209/rev_GEOP.2015.v6.n2.48428.