Professor of Economics, UC Berkeley

Universidad del Pais vasco-EHU

Reuters Institute, University of Oxford

University of Minnesota, Carlson School of Management

Hearst Professor of Communication, Stanford

Doyle Professor in Public Policy, Emeritus, Stanford University

Professor of Media Economics, University of Glasgow

Professor of Management, University of Zurich

New Economic School, ICREA-Barcelona IPEG, Univ. Pompeu Fabra

Professor of Communication & Media Economics, University of Zurich