Court of Justice 13 June 2013, Joined Cases C-630/11 P to C-633/11 P: Judgment of the Court (Second Chamber) of 13 June 2013 — HGA Srl. and Others v European Commission (Appeals — Regional State aid — Aid to the hotel industry in Sardinia — New aid — Alteration to an existing aid scheme — Corrective decision — Possibility of adopting such a decision — Regulation (EC) No 659/1999 — Articles 4(5), 7(6), 10(1), 13(2), 16 and 20(1) — Incentive effect of the aid — Protection of legitimate expectations)

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