1. Art. 43 EGV: Das Niederlassungsrecht;A See;Das Recht der EU. Kommentar,2000
2. The European Court of Justice's Case Law on Freedom to Provide Services: Is Keck Relevant;W-H Roth;Services and Free Movement in EU Law,2002
3. The Case Law of the ECJ concerning the free Provision of Services;V U Hatzopoulos & /T;Common Market Law Review,2006