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1Article of journalPor Quintero Henao, Luis Fernando; Zapata Madrigal, Germán Darío; Ovalle Carranza, Demetrio Arturo; Chacón Ramírez, EdgarPublished in 2008Repositorio Universidad Nacional de Colombia
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2Article of journalPublished in 2008Repositorio Universidad Nacional de Colombia
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3Article of journalPublished in 2007Repositorio Universidad Nacional de Colombia
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4Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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5Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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6Article of journalPor González González, Héctor Mauricio; Duque Méndez, Néstor Darío; Ovalle Carranza, Demetrio ArturoPublished in 2008Repositorio Universidad Nacional de Colombia
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7Article of journalPublished in 2007Repositorio Universidad Nacional de Colombia
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8Article of journalPublished in 2007Repositorio Universidad Nacional de Colombia
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9Article of journalPublished in 2007Repositorio Universidad Nacional de Colombia
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10Article of journalPublished in 2008Repositorio Universidad Nacional de Colombia
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11Article of investigationPublished in 2008Repositorio Repositorio UdeA
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