1 . MEMBER STATES - OBLIGATIONS - FAILURE TO FULFIL - RETENTION OF A NATIONAL PROVISION INCOMPATIBLE WITH COMMUNITY LAW - JUSTIFICATION BASED ON THE EXISTENCE OF ADMINISTRATIVE PRACTICES ENSURING THE APPLICATION OF THE TREATY - UNACCEPTABLE 2 . FREEDOM OF MOVEMENT FOR PERSONS - FREEDOM OF ESTABLISHMENT - FREEDOM TO PROVIDE SERVICES - WORKERS - REGULATED OCCUPATIONS - EXCLUSION OF NATIONALS OF OTHER MEMBER STATES OR CONDITION OF RECIPROCITY - NOT PERMISSIBLE ( EEC TREATY , ARTS 48 , 52 AND 59 )