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ISSN 2503-1716.
Available at: &lt;<a href="http://103.29.196.112/index.php/jei/article/view/60706" target="_new">http://103.29.196.112/index.php/jei/article/view/60706</a>&gt;. Date accessed: 16 dec. 2025.
doi: <a href="https://doi.org/10.24843/JEI.2020.v06.i01.p09">https://doi.org/10.24843/JEI.2020.v06.i01.p09</a>.