1 . QUESTIONS REFERRED FOR A PRELIMINARY RULING - INTERLOCUTORY PROCEEDINGS FOR AN INTERIM ORDER - REFERENCE OF SUCH CASES TO THE COURT - VALIDITY ( EEC TREATY , SECOND PARAGRAPH OF ARTICLE 177 ) 2 . QUESTIONS REFERRED FOR A PRELIMINARY RULING - INTERLOCUTORY PROCEEDINGS FOR AN INTERIM ORDER ( ' EINSTWEILIGE VERFUGUNG ' ) - REFERENCE OF SUCH CASES TO THE COURT - PROCEEDINGS ON THE SUBSTANCE OF THE CASE - INSTITUTION THEREOF - POSSIBILITY - DUTY TO REFER CASES TO THE COURT - NONE ( EEC TREATY , THIRD PARAGRAPH OF ARTICLE 177 )