@article{DAN_1969_187_3_a9,
     author = {G. A. Margulis},
     title = {On the arithmeticity of discrete groups},
     journal = {Doklady Akademii Nauk},
     pages = {518--520},
     publisher = {mathdoc},
     volume = {187},
     number = {3},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_187_3_a9/}
}