First Author:   Raphael Corbi University of Sao Paulo raphaelcorbi@hotmail.com   Rua Carlos Del Prete, 265, apt, 265, apto101 São Bernardo do Campo, 09710-230, Brazil   1141232829(Phone) 1141232829(Fax) Second Author: Rafael Ferreira University of Sao Paulo rafaelferreira@usp.br         Third Author: Jaqueline Oliveira Rhodes College oliveiraj@rhodes.edu         Fourth Author: Danilo Souza Insper danilops2@insper.edu.br