Affiliation: | (1) LEAR – Laboratorio di Economia, Antitrust e Regolamentazione, Via del Banco di S. Spirito 42, 00184 Rome, Italy;(2) Humboldt University Berlin and Wissenschaftszentrum Berlin (WZB), Reichpietschufer 50, 10785 Berlin, Germany;(3) Research Institute of Industrial Economics – IFN, Grevgatan 34, 102 15 Stockholm, Sweden;(4) Department of Economics and Institutions, University of Rome “Tor Vergata”, Building B, 3rd Floor, Room no. 33, Via Columbia 2, 00133 Rome, Italy |