%0 Journal Article %A È. B. Vinberg %A Ĭ. Mennicke %A H. Нelling %T On some generalized triangular groups and three-dimensional orbifolds %J Trudy Moskovskogo matematičeskogo obŝestva %D 1995 %P 5-32 %V 56 %I mathdoc %U http://geodesic.mathdoc.fr/item/MMO_1995_56_a0/ %G ru %F MMO_1995_56_a0