Judgment of the Court of 30 September 2003 in Case C-224/01 (Reference for a preliminary ruling from the Landesgericht für Zivilrechtssachen Wien): Gerhard Köbler v Republik Österreich (Equal treatment — Remuneration of university professors — Indirect discrimination — Length-of-service increment — Liability of a Member State for damage caused to individuals by infringements of Community law for which it is responsible — Infringements attributable to a national court)