(NoB]AQ ALGEBRA (B:s (Nw (B2-(NH TOMAH (B/s - (NsKORNQKOW(B, (NlEW aNATOLXEWI^s ((NmOSKWA (B:s (NnAUKA(B,s, 1990)
(Nt(B. 1 (1990, 591 (NS(B.) :s (Nt(B. 2 (1991, 479 (NS(B.) :s
Keywords: (NaLGEBRAs