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<strong>Science Diliman: A Journal of Pure and Applied Sciences</strong>, [S.l.], v. 25, n. 1, oct. 2013.
ISSN 2012-0818.
Available at: &lt;<a href="https://www.journals.upd.edu.ph/index.php/sciencediliman/article/view/3931" target="_new">https://www.journals.upd.edu.ph/index.php/sciencediliman/article/view/3931</a>&gt;. Date accessed: 18 sep. 2025.