MOVSISYAN, Yu. M. HYPERIDENTITIES OF LEFT AND RIGHT DISTRIBUTIVITIES IN VARIETIES OF SEMI­GROUPS. Proceedings of the YSU A: Physical and Mathematical Sciences, Yerevan, Armenia, v. 34, n. 1 (192), p. 28–32, 2000. DOI: 10.46991/PYSUA.2000.34.1.028. Disponível em: https://journals.ysu.am/proceedings-phys-math/article/view/vol34_no1_2000_pp028-032. Acesso em: 23 may. 2026.