First Author:   Alex Coad Max Planck Institute of Economics, Jena, Germany coad@econ.mpg.de   Max Planck Institute of Economics, Evolutionary Economics Group, Kahlaische Strasse 10 Jena, D-07745, Germany   +49 3641 686822(Phone) +49 3641 686822(Fax) http://www.econ.mpg.de/english/staff/staffpage.php?group=evo&name=coad Second Author: Rekha Rao School of Management, University of Bath rao.rekha@gmail.com   Strategic and International Management Group, School of Management, University of Bath Bath, BA2 7AY, UK   +44 (0) 1225 383821(Phone) +44 (0) 1225 386473(Fax)