@article{RM_1974_29_1_a7,
     author = {G. A. Margulis},
     title = {Arithmetic properties of discrete subgroups},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {107--156},
     publisher = {mathdoc},
     volume = {29},
     number = {1},
     year = {1974},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1974_29_1_a7/}
}