@article{IM2_2007_71_1_a3,
     author = {V. V. Nikulin},
     title = {Finiteness of the number of arithmetic groups generated by reflections in {Lobachevsky} spaces},
     journal = {Izvestiya. Mathematics },
     pages = {53--56},
     publisher = {mathdoc},
     volume = {71},
     number = {1},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2007_71_1_a3/}
}