Introductory Notes, Terminological Issues and Demarcation of the Scope of the Study.- The Procedural Autonomy of the Member States from the Viewpoint of the Principles and Criteria Regulating the Relations Between National Law and EU Law.- The Jurisprudence of the ECJ on the Procedural Autonomy of Member States: Analysis of the Fundamental Judgements.- The Procedural Autonomy of the Member States: Judges and Legislators. Conclusions.