Leuven Congress book The burden of proof and the retrieval order General reports H. Gribnau & M.R.T. Pauwels - General report National reports Austria Belgium Denmark Finland Germany Greece Hungary Italy Luxembourg Netherlands Poland Portugal Spain Sweden Turkey United Kingdom United States (1) United States (2) Thematic reports M. Lang - Limitation of the temporal effects of judgements of the ECJ Presentations F. Vanistendael - The crisis, a window of necessity for EU taxation Miscellaneous Questionnaire M. Moessner - The crisis: A window of necessity for EU taxation