Case C-162/07: Judgment of the Court (Third Chamber) of 22 May 2008 (reference for a preliminary ruling from the Corte Suprema di Cassazione (Italy)) — Ampliscientifica Srl, Amplifin SpA v Ministero dell'Economia e delle Finanze, Agenzia delle Entrate (Sixth VAT directive — Taxable persons — Second subparagraph of Article 4(4) — Parent companies and subsidiaries — Implementation by the Member State of the single taxable person scheme — Conditions — Consequences)