%0 Journal Article %T All-Union conference dedicated to the 70th anniversary of S. Kh. Sirazhdinov %J Diskretnaya Matematika %D 1990 %P 125 %V 2 %N 4 %U http://geodesic.mathdoc.fr/item/DM_1990_2_4_a12/ %G ru %F DM_1990_2_4_a12