%0 Journal Article %A I. A. Zhigulin %T Certain invariants of the groups of triangular-unit matrices in a space adjoint to the space of its Lie algebra %J Doklady Akademii Nauk %D 1965 %P 32-35 %V 164 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_164_1_a6/ %G ru %F DAN_1965_164_1_a6