en: Case C-303/88, Italian Republic v Commission [1991] ECR I-1433, at paragraphs 20-22.
el: Βλέπε http://www.eftasurv.int/media/state-aid-guidelines/Part-VI---Framework-for-state-aid-in-the-form-of-public-service-compensation.pdf (δεν έχει ακόμη δημοσιευθεί).