decis presid court presid court justic regard articl treati establish european coal steel commun regard articl treati establish european econom commun regard articl treati establish european atom energi commun regard council decis octob establish court instanc european commun articl thereof member court instanc appoint common accord govern member state oath court justic court instanc posit exercis judici function entrust declar court instanc european commun constitut accord law articl council decis octob establish court instanc european commun enter forc dai public decis offici journal european commun luxembourg octob presid court justic