council decis novemb amend decis ec extern auditor nation central bank ec council european union regard treati establish european commun articl thereof regard statut european system central bank european central bank articl thereof regard recommend european central bank hereinaft refer ecb octob account ecb nation central bank audit independ extern auditor recommend govern council ecb approv council european union pursuant decis ec greec fulfil condit adopt singl currenc januari derog greec refer recit decis ec abrog effect januari abrog derog greec govern council ecb recommend council approv extern auditor bank greec annual account start financi year ernst amp young hella certifi auditor sa mr charalambo stathaki regist certifi public account follow recommend govern council amend decis ec decid articl paragraph ad articl decis ec quot ernst amp young hella certifi auditor sa mr charalambo stathaki regist certifi public account approv extern auditor bank greec annual account start financi year quot articl decis notifi ecb articl decis publish offici journal european commun brussel novemb council presid védrine oj oj oj decis amend decis ec oj