%0 Journal Article %A È. B. Vinberg %T Discrete groups generated by reflections in Lobachevskii spaces %J Sbornik. Mathematics %D 1967 %P 429-444 %V 1 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1967_1_3_a7/ %G en %F SM_1967_1_3_a7