33In this regard, it must be borne in mind that, according to settled case-law, Articles 39 EC, 43 EC and 49 EC do not apply only to the actions of public authorities but extend also to rules of any other nature aimed at regulating in a collective manner gainful employment, self-employment and the provision of services (see Case 36/74 Walrave and Koch [1974] ECR 1405, paragraph 17; Case 13/76 Dona [1976] ECR 1333, paragraph 17; Bosman, paragraph 82; Joined Cases C-51/96 and C-191/97 Deliège [2000] ECR I-2549, paragraph 47; Case C-281/98 Angonese [2000] ECR I-4139, paragraph 31; and Case C-309/99 Wouters and Others [2002] ECR I-1577, paragraph 120).
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