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1Article of journalPublished in 2013Repositorio Universidad Nacional de Colombia
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2Article of journalPublished in 2015Repositorio Universidad Nacional de Colombia
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3Published in 2013Repositorio Universidad Nacional de Colombia
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5Article of journalPublished in 2010Repositorio Universidad Nacional de Colombia
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6Published in 2012Repositorio Universidad Nacional de Colombia
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11Published in 2012Repositorio Universidad Nacional de Colombia
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