26The applicant submits that the case-law of the Court of Justice relating to competitions shows that a selection board may indeed delegate tasks or be assisted in its work, provided however that it always retains control of the proceedings by reserving the power to take the final decision and by itself determining the criteria of assessment (Opinion of Advocate General Warner in Case 90/74Deboeck v Commission [1975] ECR 1123 and judgments in Case 122/77Ches and Others v Commission [1978] ECR 2085 and Case 40/86Kolivas v Commission [1987] ECR 2643). According to the applicant, the Committee abandoned control of the selection process within the national working parties and, moreover, failed to define the criteria for assessing applications, contrary to its obligations and responsibilities. Furthermore, by taking nationality as a criterion, it infringed the principle of equal treatment for candidates entering the first stage.