1. Departamento de Industrias, Universidad Técnica, Federico Santa María, Av. España 1680, Valparaíso, Chile
2. Department of Economics and Informatics, Federal Rural University of Pernambuco, Serra Talhada, PE 56909-535 Brazil
3. School of Public Policy and Government, Getulio Vargas Foundation (EPPG/FGV), Brasilia, DF, Brazil