Series of monographs, open to to national and international researchers inside and outside the academia, focusing on aspects of the constitutional law of the European Union. The collection was created in 2000 at the initiative of professor Antonio Carlos Pereira Menaut, who teaches Constitutional Law at the Universidade de Santiago de Compostela and who is also the director of its Cátedra Jean Monnet of constitutional law of the European Union. The collection was discontinued in 2006.