%0 Journal Article %A V. M. Levchuk %T Automorphisms of unipotent subgroups of Chevalley groups %J Algebra i logika %D 1990 %P 315-338 %V 29 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1990_29_3_a3/ %G ru %F AL_1990_29_3_a3