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ISSN 2684-9186.
Available at: &lt;<a href="http://103.29.196.112/index.php/spektrum/article/view/117752" target="_new">http://103.29.196.112/index.php/spektrum/article/view/117752</a>&gt;. Date accessed: 16 dec. 2025.
doi: <a href="https://doi.org/10.24843/SPEKTRUM.2024.v11.i02.p5">https://doi.org/10.24843/SPEKTRUM.2024.v11.i02.p5</a>.