wardayani, Ari, 		Cerinda, Mitha, 		Sihwaningrum, Idha, 		Estri, Mutia, AND 		Sidik, Wuryatmo.
" SOME PROPERTIES OF SUBSEMIHYPERGROUPS" <em>Jurnal Ilmiah Matematika dan Pendidikan Matematika</em> [Online], Volume 13 Number 2 (7 December 2021)