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21
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22Published in 2019Repositorio Repositorio UIS
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23Published in 2012Repositorio RiUPTC: Repositorio Institucional UPTC
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24
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25Published in 2006Repositorio Repositorio Universidad de la Sabana
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26Article of journalPublished in 2011Repositorio Repositorio Universidad Javeriana
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27Article of journalPublished in 2005Repositorio Universidad Nacional de Colombia
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28Article of journalPublished in 2005Repositorio Universidad Nacional de Colombia
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29Published in 2018Repositorio Repositorio EAFIT
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30Article of journalPublished in 2017Repositorio Repositorio Institucional UPN
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31http://purl.org/coar/resource_type/c_6884Published in 2012Repositorio RiUPTC: Repositorio Institucional UPTC
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32Article of journalPublished in 1990Repositorio Universidad Nacional de Colombia
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33Doctoral thesisPublished in 2015Repositorio Universidad Nacional de Colombia
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34Article of journalPublished in 2009Repositorio Universidad Nacional de Colombia
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35
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36Article of journalPublished in 2016Repositorio Universidad Nacional de Colombia
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37Published in 2010Repositorio Universidad Nacional de Colombia
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38
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39Published in 2017Repositorio RiUPTC: Repositorio Institucional UPTC
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40masterThesisPublished in 2013Repositorio Repositorio Universidad JaverianaGet full text
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