@article{IM2_1993_40_3_a0,
     author = {V. P. Platonov and A. S. Rapinchuk},
     title = {Abstract properties of $S$-arithmetic groups and the congruence s problem},
     journal = {Izvestiya. Mathematics },
     pages = {455--476},
     publisher = {mathdoc},
     volume = {40},
     number = {3},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1993_40_3_a0/}
}