López-Villuendas, , A. M., and C. del Campo,. “Analysis of Economic Convergence in the Galicia-Northern Portugal Euroregion in the Period 1980-2019”. Revista Galega De Economía, Vol. 31, no. 2, Sept. 2022, pp. 1-19, doi:10.15304/rge.31.2.8289.