%0 Journal Article %T In memory of Anatoliĭ Illarionovič Širšov %J Algebra i logika %D 1981 %P 3-4 %V 20 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1981_20_1_a0/ %G ru %F AL_1981_20_1_a0