1 . TAX PROVISIONS - HARMONIZATION OF LAWS - TURNOVER TAXES - COMMON SYSTEM OF VALUE-ADDED TAX - SIXTH DIRECTIVE - DOUBLE TAXATION IN INTRA-COMMUNITY TRADE - INCOMPATIBLE WITH ARTICLE 95 OF THE TREATY - ELIMINATION - ROLE DEVOLVING UPON THE COURT PENDING ACTION BY THE COMMUNITY LEGISLATURE ( EEC TREATY , ART . 95 ; COUNCIL DIRECTIVE NO 77/388/EEC , ARTS 2 AND 11 ) 2 . TAX PROVISIONS - HARMONIZATION OF LAWS - TURNOVER TAXES - COMMON SYSTEM OF VALUE-ADDED TAX - VAT CHARGED ON THE IMPORTATION , FROM ANOTHER MEMBER STATE , OF GOODS SUPPLIED BY A NON-TAXABLE PERSON - METHOD OF CALCULATION ( EEC TREATY , ART . 95 ; COUNCIL DIRECTIVE NO 77/388/EEC )