JUDGMENT OF THE COURT OF FIRST INSTANCE of 24 October 1997 in Case T-239/94: Association des Aciéries Européennes Indépendantes (EISA) v. Commission of the European Communities (ECSC - Action for annulment - State aid - Individual decisions authorizing the grant of State aid to steel undertakings - Incompatibility with Treaty provisions - Retroactivity - Article 4 (b) and (c) and the first and second paragraphs of Article 95 of the Treaty)