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501Article of journalPublished in 2014Repositorio RIUCaC - Repositorio U. Católica
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502Published in 2010Repositorio Repositorio Institucional USTA
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503Published in 2020Repositorio Repositorio Institucional USTA
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506Article of journalPor Espinosa, OscarPublished in 1992Repositorio Universidad Nacional de Colombia
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507articlePublished in 2011Repositorio Repositorio Universidad Javerianaby Herrera Ospina, José de Jesús; Politécnico Colombiano Jaime Isaza Cadavid y Universidad de AntioquiaGet full text
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512Published in 2020Repositorio Universidad Santo Tomás
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514Published in 2010Repositorio Universidad Santo Tomás
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517Published in 2005Repositorio Repositorio EAFIT
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518Published in 2010Repositorio Repositorio EAFIT
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