1 . MEASURES ADOPTED BY THE INSTITUTIONS - DIRECTIVES - IMPLEMENTATION BY THE MEMBER STATES - TRANSPOSITION INTO NATIONAL LAW WITHOUT LEGISLATIVE ACTION - CONDITIONS - EXISTENCE OF GENERAL PRINCIPLES OF LAW WHICH GUARANTEE THAT THE DIRECTIVE WILL BE FULLY APPLIED ( EEC TREATY , ART . 189 , THIRD PARAGRAPH ) 2 . FREE MOVEMENT OF PERSONS - RIGHT OF ESTABLISHMENT AND FREEDOM TO PROVIDE SERVICES - NURSES - RECOGNITION OF DIPLOMAS - DIRECTIVE NO 77/452 - IMPLEMENTATION - NATIONAL LEGISLATION WHICH EMPOWERS THE AUTHORITIES TO ASSESS THE EQUIVALENCE OF TRAINING - NOT IN CONFORMITY WITH THE DIRECTIVE ( COUNCIL DIRECTIVE NO 77/452 , ART . 3 )