@article{MMO_1995_56_a0,
     author = {\`E. B. Vinberg and \u{I}. Mennicke and H. {\CYRN}elling},
     title = {On some generalized triangular groups and three-dimensional orbifolds},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {5--32},
     publisher = {mathdoc},
     volume = {56},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1995_56_a0/}
}