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61Article of journalPor Piza, AlfonsoPublished in 2004Repositorio Universidad Nacional de Colombia
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62Article of journalPublished in 2004Repositorio Universidad Nacional de Colombia
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63Article of journalPublished in 2004Repositorio Universidad Nacional de Colombia
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64Published in 2012Repositorio Repositorio Institucional USTA
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65Article of journalPublished in 2015Repositorio Repositorio Universidad Javeriana
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66Published in 2012Repositorio Universidad Santo Tomás
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67Published in 2012Repositorio Repositorio Institucional USTA
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68Article of journalPublished in 2004Repositorio Universidad Nacional de Colombia
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69Article of journalPublished in 2004Repositorio Universidad Nacional de Colombia
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71Article of journalPor Leroux, RobertPublished in 2004Repositorio Universidad Nacional de Colombia
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72Article of journalPublished in 2004Repositorio Universidad Nacional de Colombia
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73Article of journalPublished in 2004Repositorio Universidad Nacional de Colombia
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74Article of journalPublished in 2011Repositorio Repositorio Institucional UPN
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75Article of journalPublished in 2006Repositorio Repositorio Universidad Javeriana
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76Published in 2010Repositorio Repositorio Universidad de la Sabana
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77Published in 2016Repositorio Repositorio Institucional USTA
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78Published in 2016Repositorio Universidad Santo Tomás
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79Published in 2016Repositorio Repositorio Institucional USTA
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80Article of journalPor Sanabria, FabianPublished in 2004Repositorio Universidad Nacional de Colombia
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