1. College de France, London School of Economics and Insead P.Aghion@lse.ac.uk
2. University of Chicago uakcigit@uchicago.edu
3. Hanken School of Economics and Helsinki Graduate School of Economics ari.hyytinen@hanken.fi
4. Aalto University School of Business, Helsinki Graduate School of Economics and KU Leuven otto.toivanen@aalto.fi