[25] Joined cases 3,4 and 6/76 Kramer, paragraphs 42 and 45, Opinion of 19 March 1993 of the Court of Justice, 2/91, paragraph 37, case C-266/03, Commission v Luxembourg, paragraphs 57 and 58, and case C-433/03, Commission v Germany, paragraphs 63 and 64.
[25] Affaires jointes 3, 4 et 6/76 (Kramer), points 42 et 45, avis 2/91 de la Cour du 19 mars 1993, point 37, affaire C-266/03, Commission/Luxembourg, points 57 et 58, et affaire C-433/03, Commission/Allemagne, points 63 et 64.