@article{SM_1974_22_2_a6,
     author = {L. N. Vaserstein},
     title = {Stabilization for classical groups over rings},
     journal = {Sbornik. Mathematics},
     pages = {271--303},
     year = {1974},
     volume = {22},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1974_22_2_a6/}
}