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First Author:
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| Bruno Milani |
| Federal University of Santa Maria |
| brunoprofess@gmail.com |
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| Rua Visconde de Pelotas 1700, ap 316 Bairro N. Srª de Fátima |
| Santa Maria, 97015-140, Brazil |
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| 55 55 9975 5850(Phone) |
| 55 55 9975 5850(Fax) |
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Second Author:
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| Paulo Sérgio Ceretta |
| Federal University of Santa Maria |
| milani_bruno@yahoo.com.br |
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