34It has already been held, with respect to the deployment of workers who are nationals of non-member States by a service-providing undertaking established in the Community, that national legislation which makes the provision of services within national territory by an undertaking established in another Member State subject to the issue of an administrative visa constitutes a restriction on the freedom to provide services within the meaning of Article 49 EC (see Vander Elst, paragraph 15, and Commission v Luxembourg, paragraph 24).
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