++++ 1 . ACTION FOR ANNULMENT - NATURAL OR LEGAL PERSONS - MEASURES OF DIRECT AND INDIVIDUAL CONCERN TO THEM - REGULATION IMPOSING ANTI-DUMPING DUTIES - PRODUCERS AND EXPORTERS FROM NON-MEMBER COUNTRIES ( EEC TREATY, ART . 173, SECOND PARAGRAPH; COUNCIL REGULATION NO 3017/79 ) 2 . COMMON COMMERCIAL POLICY - PROTECTION AGAINST DUMPING - UNDERTAKINGS ACCEPTED - REVIEW - ARTICLE 14 OF REGULATION NO 3017/79 ) - CONDITIONS ( COUNCIL REGULATION NO 3017/79, ART . 14 ) 3 . COMMON COMMERCIAL POLICY - PROTECTION AGAINST DUMPING - DUMPING MARGIN - DETERMINATION OF THE NORMAL VALUE AND THE EXPORT PRICE - CHOICE OF METHOD OF CALCULATION - DISCRETION OF THE COMMISSION - CHANGE IN THE METHOD OF CALCULATION - IMPOSSIBLE TO RELY ON THE PRINCIPLE THAT LEGITIMATE EXPECTATIONS MUST BE PROTECTED ( COUNCIL REGULATION NO 3017/79, ART . 2 ) 4 . COMMON COMMERCIAL POLICY - PROTECTION AGAINST DUMPING - OFFER OF PRICE UNDERTAKINGS - ACCEPTANCE - DISCRETION OF THE INSTITUTIONS ( COUNCIL REGULATION NO 3017/79, ART . 10 )