Case C-275/05: Judgment of the Court (First Chamber) of 26 October 2006 (reference for a preliminary ruling from the Verwaltungsgericht Sigmaringen — Germany) — Alois Kibler jun. v Land Baden-Württemberg (Milk and milk products — Article 5c of Regulation (EEC) No 804/68 — Additional levy in the milk and milk products sector — Regulations (EEC) Nos 857/84, 590/85 and 1546/88 — Transfer of the reference quantity following the return of part of a holding — Landlord who is not himself a producer of milk or milk products — Rural lease voluntarily brought to an end)