%0 Journal Article %A E. I. Timoshenko %T Using Fox Derivatives in Treating Groups of the Form $F/[R',F]$ %J Algebra i logika %D 2006 %P 114-125 %V 45 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_2006_45_1_a5/ %G ru %F AL_2006_45_1_a5