%0 Journal Article %A V. G. Durnev %A O. V. Zetkina %A A. I. Zetkina %T On automorphic reducibility for sets elements of free groups %J Čebyševskij sbornik %D 2013 %P 52-55 %V 14 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CHEB_2013_14_3_a6/ %G ru %F CHEB_2013_14_3_a6