1 . FREE MOVEMENT OF GOODS - FRONTIER CONTROLS - PERMISSIBILITY - CONDITIONS 2 . FREE MOVEMENT OF GOODS - QUANTITATIVE RESTRICTIONS - MEASURES HAVING EQUIVALENT EFFECT - RESTRICTIONS ON THE REPRESENTATION OF OWNERS OF GOODS FOR THE PURPOSE OF CUSTOMS DECLARATIONS - PERMISSIBILITY - CONDITIONS ( EEC TREATY , ART . 30 ) 3 . MEMBER STATES - OBLIGATIONS - FAILURE TO FULFIL - MAINTENANCE OF A NATIONAL PROVISION INFRINGING COMMUNITY LAW