Boletín de Coyuntura;
Number 20;
January - March 2019;
e-ISSN 2600-5727;
p-ISSN 2528-7931;
URL: http://revistas.uta.edu.ec/erevista/index.php/bcoyu/issue/view/119
DOI: https://doi.org/10.31164/bcoyu.20.2019
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