TY - JOUR AU - V. S. Atabekyan AU - H. T. Aslanyan AU - S. T. Aslanyan TI - Powers of subsets in free periodic groups JO - Proceedings of the Yerevan State University. Physical and mathematical sciences PY - 2022 SP - 43 EP - 48 VL - 56 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/UZERU_2022_56_2_a0/ LA - en ID - UZERU_2022_56_2_a0 ER -