34In this connection, it must be recalled that, although, by virtue of the very nature of regulations and of their function in the system of sources of EU law, the provisions of regulations generally have immediate effect in the national legal systems, without the need for the national authorities to adopt implementing measures, some of their provisions may nevertheless require, for their application, the adoption of implementing measures by the Member States (judgment of 25 October 2012 in Ketelä, C‑592/11, EU:C:2012:673, paragraph 35; order of 16 January 2014 in Dél-Zempléni Nektár Leader Nonprofit, C‑24/13, EU:C:2014:40, paragraph 14; and judgment of 15 May 2014 in Szatmári Malom, C‑135/13, EU:C:2014:327, paragraph 54).
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