European University Institute, Florence

CV Starr Professor of Law, Peking University School of Transnational Law

Jean Monnet Professor of European Union Law & Policy

Professor of Law, Indiana University Robert H. McKinney School of Law

World Trade Institute, World Trade Organization

University of Tokyo (Professor emeritius)

Simon FS Li Professor of Law, Chinese Univesity of Hong Kong

Professor of Law, Stellenbosch University

Professor of Law, School of Transnational Law, Peking University, China

Professor of Law, Wayne State University