See Case C-205/98, Commission v Austria [2000], ECR I-7367, in particular paragraphs 76, 78 and 86; Case C-6/97 Italy v Commission [1999], ECR I-2981, in particular paragraphs 15, 21, 23; Case C-200/97 Ecotrade [1998]; Case C-90/94, Haar Petroleum [1997], ECR I-4085, in particular paragraphs 34, 35, 37 and 40.
Véanse: asunto C-205/98, Comisión/Austria, Rec. 2000, p. I-07367, en particular los apartados 76, 78 y 86; C-6/97, Italia/Comisión, Rec. 1999, p. I-02981, en particular los apartados 15, 21 y 23; asunto C-200/97, Ecotrade, Rec. 1998, p. I-7907; asunto C-90/94, Haar Petroleum, Rec. 1997, p. I-04085, en particular los apartados 34, 35, 37 y 40.