%0 Journal Article %A V. S. Atabekyan %T On normal subgroups in the periodic products of S.\,I.~Adian %J Informatics and Automation %D 2011 %P 15-31 %V 274 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_2011_274_a2/ %G ru %F TRSPY_2011_274_a2