%0 Journal Article %A N. A. Vavilov %T Can one see the signs of structure constants? %J Algebra i analiz %D 2007 %P 34-68 %V 19 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_2007_19_4_a1/ %G ru %F AA_2007_19_4_a1