1. School of Economics, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, South Korea
2. Research Department, International Monetary Fund, 700 19th Street NW, Washington DC 20431, USA; e-mail: dfurceri@imf.org
3. University of Palermo, Viale delle Scienze, Ed. 13 90128 Palermo, Italy
4. Instituto Superior de Economia e Gestão (ISEG), Universidade de Lisboa, Rua do Quelhas 6, Lisboa 1200-781, Portugal
5. Research in Economics and Mathematics (REM) and Research Unit on Complexity and Economics (UECE), ISEG, Universidade de Lisboa, Rua Miguel Lupi 20, Lisbon 1249-078, Portugal
6. Economics for Policy, Nova School of Business and Economics, Universidade Nova de Lisboa, Rua da Holanda 1, Carcavelos 2775-405, Portugal
7. IPAG Business School, 184 Boulevard Saint-Germain, Paris 75006, France