commiss regul ec april appli reduct coeffici refund certif good cover annex treati provid articl regul ec commiss european commun regard treati establish european commun regard council regul ec decemb lai trade arrang applic good result process agricultur product amend commiss regul ec subparagraph articl thereof regard commiss regul ec lai common detail rule applic system grant export refund agricultur product export form good cover annex treati criteria fix amount refund amend regul ec articl thereof cumul amount refund request certif issu eur sum ad amount applic made april annual basi prevent commiss meet commit articl regul ec reduct coeffici calcul basi articl appli amount request form certif abovement week adopt regul articl amount certif applic lodg period april subject reduct coeffici articl regul enter forc april regul bind entireti directli applic member state brussel april commiss erkki liikanen member commiss oj oj oj oj