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First Author:
 
Aline B. Schuh
Federal Institute of Rio Grande do Sul
abschuh@gmail.com
 
 
 
 

Second Author:

Pascoal José Marion Filho
Federal University of Santa Maria
pascoaljmarion@yahoo.com.br
 
 
 
 

Third Author:

Daniel Arruda Coronel
Federal University of Santa Maria
daniel.coronel@uol.com.br