| | Studies in law, including public international and European Community law at the Universities of Vienna, (Dr. iur., 1970), Free University of Brussels, Licence speciale en Droit Europeen, 1972, and Cambridge Downing College; completion of the academic stage of the United Kingdom Bar examination |
| 1970-1971 | Court practice, First Instance Civil Court, Vienna Central |
| 1974-1978 | Lecturer, law at the University of Birmingham |
| 1979-1992 | Law Department, London School of Economics and Political Science |
| 1984-1986 | Legal adviser, Secretariat of the European Free Trade Association (EFTA) |
| 1990-1991 | Legal consultant, legal affairs division of the GATT Secretariat; Legal Adviser tor DCs and LDCs for the Technical cooperation and training division of the VVorld Trade Organisation |
| 1990-2005 | Visiting Professor, Department of International Law, Catholic University of Louvain-la-Neuve, Belgium |
| 1992-2006 | Chair of International (Economic) Law and Organisations, University of Amsterdam |
| since 1996 | Academic Director, Training and Staff Development Programs and MA Course in International Law and International Relations for High Level Officials in the Ethiopian Government and Members of |
| | the Parliament of the Federal Democratic Republic of Ethiopia |
| 1998 | EC TACIS Project, Poland |
| 1999 | Multilateral Trade Policy Assistance Programme (MUTRAP) |
| 2000-2003 | Director of the Amsterdam Law School |
| 2006 | Chair of European Community- and EU Law, University of Vienna |
| | Visiting Professorships |
| | Visiting Professor at Universities, including: Bocconi, Milano; Tulane University, New Orleans (2005); University of Minnesota, Minneapolis, USA (2001); International Law Department, Wuhan University, Wuhan, P.R.China (2001&2004); Université Panthéon-Assas, Paris II, France (2004); Institut Universitaire des Hautes Études Internationales Genève (HEI), University of Geneva (2005); University of Bratislava School of Law |
| | Lectures and Summer schools all over the world, including School of Advanced International Studies (SAIS) at John Hopkins University Washington DC; Fordham University Law School, New York; University of Bologna; Eastern University of Law and Political Science, Shanghai; North-West University of Political Science and Law, Xi-an, P.R.China; South-West University of Politics and Law, Chongqing, P.R.China; Universidade Federal do Rio de Janeiro; Alpbach Summer School on European Integration; Mohyla Academy, Kiev, Ukraine; Duke University Law School Campus, Geneva; University of Belgrade. |
