WARDAYANI, Ari et al.
 SOME PROPERTIES OF SUBSEMIHYPERGROUPS.
<strong>Jurnal Ilmiah Matematika dan Pendidikan Matematika</strong>, [S.l.], v. 13, n. 2, p. 45-56, dec. 2021.
ISSN 2550-0422.
Available at: &lt;<a href="https://jos.unsoed.ac.id/index.php/jmp/article/view/4905" target="_new">https://jos.unsoed.ac.id/index.php/jmp/article/view/4905</a>&gt;. Date accessed: 21 apr. 2025.
doi: <a href="https://doi.org/10.20884/1.jmp.2021.13.2.4905">https://doi.org/10.20884/1.jmp.2021.13.2.4905</a>.