Leverhulme International Professor of Economics, Royal Holloway University of London

Professor Emeritus, University of Maryland

Senior Researcher Emeritus at CREST, Institut Polytechnique, Paris

Professor of economics, University of York, UK.

University of Zurich and Swiss Finance Institute

Professor of Economics, Indiana University

Professor of Economics, Vanderbilt University

University of Essex

National Technical University of Athens

Professor of Economics, Washington University