decis common accord govern member state adopt euro level head state govern appoint vice presid european central bank ec head state govern member state european commun adopt euro chairmanship mr josé maría aznar lópez presid govern kingdom spain regard treati establish european commun articl articl protocol statut european system central bank european central bank regard recommend council regard opinion european parliament regard opinion govern council european central bank decid articl mr luca papademo appoint vice presid european central bank term offic year appoint take effect june articl decis publish offici journal european commun brussel presid aznar oj opinion deliv publish offici journal oj