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<strong>Philippine Engineering Journal</strong>, [S.l.], v. 40, n. 1, aug. 2019.
ISSN 2718-9287.
Available at: &lt;<a href="https://journals.upd.edu.ph/index.php/pej/article/view/6820" target="_new">https://journals.upd.edu.ph/index.php/pej/article/view/6820</a>&gt;. Date accessed: 05 aug. 2025.