First Author:   Jaqueson K. Galimberti The University of Manchester and The Capes Foundation jakaga2002@yahoo.com.br   3, Quad C, PhD 29, Arthur Lewis Building, Economics, SoSS, University of Manchester Manchester, M13 9NT, United Kingdom   +44 07579221440(Phone) +44 07579221440(Fax) http://sites.google.com/site/jkgeconoeng/ Second Author: Sergio da Silva Department of Economics, Federal University of Santa Catarina professorsergiodasilva@gmail.com