%0 Journal Article %A L. A. Bokut' %A A. I. Shirshov %T Second enlarged session of seminar “Ring Theory”, April 7–9, 1980 %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1981 %V 36 %N 2 %U http://geodesic.mathdoc.fr/item/RM_1981_36_2_a26/ %G ru %F RM_1981_36_2_a26