@article{Ararteko-dialnet-ar-18-ART0000387897, title = {Federalizing Europe? The Costs, Benefits and Preconditions of FederalPolitical Systems}, author = {Arroyo Gil, Antonio}, publisher = {Centro de Estudios PolĂ­ticos y Constitucionales}, year = {1997}, url = {http://biblioteca.ararteko.eus/Record/dialnet-ar-18-ART0000387897} crossref = {http://biblioteca.ararteko.eus/Record/dialnet-ar-18-ART0000387897} }