council regul ec april export ecsc steel product bulgaria commun period januari decemb extens doubl check system council european union regard treati establish european commun articl thereof regard propos commiss europ agreement establish associ european commun member state part republ bulgaria part enter forc februari parti decid decis eu bulgaria associ council extend doubl check system introduc decis associ council period januari decemb extend commun implement legisl introduc regul ec adopt regul articl regul ec continu appli period januari decemb accord provis decis titl preambl articl regul refer period januari decemb replac refer januari decemb articl regul enter forc dai public offici journal european commun regul appli effect januari regul bind entireti directli applic member state luxembourg april council presid gama oj page offici journal oj oj regul amend regul ec oj