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 Kondisi Urutan Natural Pada Semigrup Reguler.
<strong>Jurnal Matematika</strong>, [S.l.], v. 3, n. 1, p. 24 - 33, july 2013.
ISSN 2655-0016.
Available at: &lt;<a href="https://ojs.unud.ac.id/index.php/jmat/article/view/7329" target="_new">https://ojs.unud.ac.id/index.php/jmat/article/view/7329</a>&gt;. Date accessed: 23 feb. 2025.
doi: <a href="https://doi.org/10.24843/JMAT.2013.v03.i01.p32">https://doi.org/10.24843/JMAT.2013.v03.i01.p32</a>.