Visiting Professor (University of Vienna) Visiting Professor (University of Graz) Honorary Professor (University of International Business and Economics, Beijing)Former Secretary-General, International Institute for the Unification of Private Law (UNIDROITT)Former Principal Legal Officer and Head, Legislative Branch, at the secretariat of the United Nations Commission on International Trade Law (UNCITRAL)
Visiting Professor (University of Graz)
Honorary Professor (University of International Business and Economics, Beijing)Former Secretary-General, International Institute for the Unification of Private Law (UNIDROITT)Former Principal Legal Officer and Head, Legislative Branch, at the secretariat of the United Nations Commission on International Trade Law (UNCITRAL)