@article{ZNSL_1997_236_a19,
     author = {A. V. Stepanov},
     title = {On the normal structure of the general linear group over a~ring},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {166--182},
     year = {1997},
     volume = {236},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1997_236_a19/}
}