++++ 1 . MEASURES ADOPTED BY THE INSTITUTIONS - DIRECTIVES - DIRECT EFFECT - CONDITIONS - LIMITS - POSSIBILITY OF RELYING UPON A DIRECTIVE AGAINST AN INDIVIDUAL - NONE ( EEC TREATY, ART . 189*(3 )*) 2 . MEASURES ADOPTED BY THE INSTITUTIONS - DIRECTIVES - IMPLEMENTATION BY THE MEMBER STATES - NEED TO ENSURE THAT DIRECTIVES ARE EFFECTIVE - OBLIGATIONS OF THE NATIONAL COURTS - LIMITS - PRINCIPLES OF LEGAL CERTAINTY AND NON-RETROACTIVITY ( EEC TREATY, ART . 189*(3 )*)