2020, Vol. 21 No. 2.
 Cover.
<strong>BULETIN FISIKA</strong>, [S.l.], v. 21, n. 2, aug. 2020.
ISSN 2580-9733.
Tersedia pada: &lt;<a href="https://ojs.unud.ac.id/index.php/buletinfisika/article/view/62660" target="_new">https://ojs.unud.ac.id/index.php/buletinfisika/article/view/62660</a>&gt;. Tanggal Akses: 11 jan. 2026