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<strong>BULETIN FISIKA</strong>, [S.l.], v. 23, n. 2, p. 78-84, aug. 2021.
ISSN 2580-9733.
Available at: &lt;<a href="https://ojs.unud.ac.id/index.php/buletinfisika/article/view/76048" target="_new">https://ojs.unud.ac.id/index.php/buletinfisika/article/view/76048</a>&gt;. Date accessed: 03 may 2024.
doi: <a href="https://doi.org/10.24843/BF.2022.v23.i02.p01">https://doi.org/10.24843/BF.2022.v23.i02.p01</a>.