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1Por Ramírez Hassan, Andrés; Vélez Álvarez, Luis Guillermo; Londoño Sierra, Liz Jeanneth; Giraldo Pérez, Yudy Elena; Londoño Cano, DanielPublished in 2011Repositorio Repositorio EAFIT
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2Por Vélez Álvarez, Luis Guillermo; Ramírez Hassan, Andrés; Londoño Sierra, Liz Jeanneth; Giraldo Pérez, Yudy Helena; Londoño Cano, Daniel.Published in 2011Repositorio Repositorio EAFIT
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5Article of journalPublished in 2003Repositorio Universidad Nacional de Colombia
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6Published in 2004Repositorio Repositorio EAFIT
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7Published in 2010Repositorio Repositorio EAFIT
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8Published in 2020Repositorio Repositorio EAFIT
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9Published in 2009Repositorio Repositorio EAFIT
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