Reuven S. Avi-Yonah is the Irwin I. Cohn Professor of Law and Director of the International Tax LLM Program at the University of Michigan Law School. He teaches the basic course on taxation and courses on international taxation, corporate taxation, tax treaties and transnational law. He has published numerous articles on domestic and international tax issues, and is the author of International Tax as International Law: U.S. Tax Law and the International Tax Regime (Cambridge Univ. Press, 2007) and U.S. International Taxation: Cases and Materials (Foundation Press, 2nd ed. 2005, with Brauner & Ring), and co-editor of Comparative Fiscal Federalism: Comparing the U.S. Supreme Court and European Court of Justice Tax Jurisprudence (Kluwer, 2007). ; Nicola Sartori holds a temporary chair in International and comparative taxation at the University of Modena Law School, Italy, and is also in Comparative law and economics of taxation at the International University College of Turin, Italy. He holds a degree in Law and Business Administration, summa cum laude, from Bocconi University, Milan, a Ph.D in Tax Law from the University of Milan - Bicocca, and a LL.M. in International Taxation and a S.J.D. from the University of Michigan Law School.; Omri Marian practices tax law at the New York Office of Sullivan & Cromwell LLP. He holds a degree in Law and Political Science, magna cum laude, from Tel Aviv University, Tel Aviv, Israel, and an LL.M. in International Taxation and an S.J.D., from the University of Michigan Law School, Ann-Arbor, Michigan.