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<strong>BULETIN FISIKA</strong>, [S.l.], v. 18, n. 2, aug. 2017.
ISSN 2580-9733.
Available at: &lt;<a href="https://ojs.unud.ac.id/index.php/buletinfisika/article/view/34507" target="_new">https://ojs.unud.ac.id/index.php/buletinfisika/article/view/34507</a>&gt;. Date accessed: 04 july 2025.