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First Author:
 
Ari Francisco de Araujo Junior
Ibmec Minas
arifaj@ibmecmg.br
 
Belo Horizonte, Brazil
 
 
 
http://paginas.terra.com.br/educacao/ari/

Second Author:

Cláudio D. Shikida
Ibmec Minas
claudiods@ibmecmg.br
 
Belo Horizonte, Brazil
 
 
 
http://shikida.net/