council regul ec novemb amend regul ec provis relat introduct euro council european union regard treati establish european commun articl thereof regard propos commiss regard opinion european parliament regard opinion european central bank council regul ec june provis relat introduct euro includ rule adopt convers rate euro currenc member state adopt euro rate convers monetari amount rule appli convers rate currenc member state adopt euro commun enter stage econom monetari union extend rule convers rate currenc member state adopt euro date member state currenc replac euro date commun enter stage econom monetari union definit quot nation currenc unit quot refer unit member state currenc defin immedi introduct euro member state articl legal basi order measur refer introduct euro member state adopt euro begin stage econom monetari union provis regul accord gener accept principl law recognit accord law currenc univers recognis form part monetari law particip member state reinforc legal certainti clariti econom agent member state countri adopt regul articl articl regul ec word quot accord paragraph articl quot ad end indent word quot case dai euro substitut currenc member state adopt euro date quot ad end fourth indent articl regul enter forc januari regul bind entireti directli applic member state accord treati establish european commun brussel novemb council presid fabiu oj opinion deliv june publish offici journal oj oj