%0 Journal Article %A V. L. Selivanov %T Decidability of Hierarchies of Regular Aperiodic Languages %J Algebra i logika %D 2002 %P 610-631 %V 41 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_2002_41_5_a5/ %G ru %F AL_2002_41_5_a5