1.
Zolfaghary P. DESCRIPTION OF ORDER 3 HYPERGROUPS OVER GROUP ARISING FROM DIHEDRAL GROUP $D_9$. Proc. YSU A: Phys. Math. Sci. [Internet]. 2013 Jun. 20 [cited 2024 Nov. 22];47(2 (231):28-33. Available from: https://pub.ysu.am/index.php/proceedings-phys-math/article/view/vol47_no2_2013_pp028-033