TY - JOUR AU - Parvaneh Zolfaghary TI - Description of order 3 hypergroups over group arising from dihedral group $D_9$ JO - Proceedings of the Yerevan State University. Physical and mathematical sciences PY - 2013 SP - 28 EP - 33 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/UZERU_2013_2_a4/ LA - en ID - UZERU_2013_2_a4 ER -