@article{UZERU_2022_56_2_a0,
     author = {V. S. Atabekyan and H. T. Aslanyan and S. T. Aslanyan},
     title = {Powers of  subsets in  free periodic groups},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {43--48},
     publisher = {mathdoc},
     volume = {56},
     number = {2},
     year = {2022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UZERU_2022_56_2_a0/}
}