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Available at: &lt;<a href="http://pes.pwsz.pila.pl/index.php/proceedings/article/view/163" target="_new">http://pes.pwsz.pila.pl/index.php/proceedings/article/view/163</a>&gt;. Date accessed: 23 dec. 2024.
doi: <a href="https://doi.org/10.14595/CP/01/004">https://doi.org/10.14595/CP/01/004</a>.