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<strong>Jurnal Matematika</strong>, [S.l.], v. 5, n. 2, p. 79-91, dec. 2015.
ISSN 2655-0016.
Available at: &lt;<a href="https://ojs.unud.ac.id/index.php/jmat/article/view/21597" target="_new">https://ojs.unud.ac.id/index.php/jmat/article/view/21597</a>&gt;. Date accessed: 31 jan. 2025.
doi: <a href="https://doi.org/10.24843/JMAT.2015.v05.i02.p58">https://doi.org/10.24843/JMAT.2015.v05.i02.p58</a>.