G<sc>arcía</sc>-Á<sc>lvarez</sc> J. and T<sc>rillo</sc>-S<sc>antamaría</sc> J.-M. Between regional spaces and spaces of regionalism: cross-border region building in the Spanish 'State of the Autonomies', <italic>Regional Studies</italic>. The intense development of cross-border cooperation in the European Union in the last two decades offers a...