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First Author:
 
Sergio Da Silva
Department of Economics, Federal University of Santa Catarina
professorsergiodasilva@gmail.com
 
 
 
 

Second Author:

Annibal Figueiredo
Department of Physics, University of Brasilia
annibal@fis.unb.br
 
 
 
 

Third Author:

Iram Gleria
Institute of Physics, Federal University of Alagoas
iramgleria@hotmail.com
 
 
 
 

Fourth Author:

Raul Matsushita
Department of Statistics, University of Brasilia
raulmatsushita@hotmail.com