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<strong>Science and Technology Indonesia</strong>, [S.l.], v. 5, n. 4, p. 117-120, oct. 2020.
ISSN 2580-4391.
Available at: &lt;<a href="http://sciencetechindonesia.com/index.php/jsti/article/view/234" target="_new">http://sciencetechindonesia.com/index.php/jsti/article/view/234</a>&gt;. Date accessed: 25 feb. 2021.
doi: <a href="https://doi.org/10.26554/sti.2020.5.4.117-120">https://doi.org/10.26554/sti.2020.5.4.117-120</a>.