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ralph lauren polo


First Author:
 
Helder Ferreira de Mendonça
Fluminense Federal University and National Council for Scientific and Technological Development
helderfm@hotmail.com
 
Miguel Pereira, 26900-000, Brazil
 
 
 
www.professores.uff.br/helderfm

Second Author:

Vitor R. C. Britto
Fluminense Federal University
vitorbritto90@hotmail.com