@article{VMJ_2010_12_4_a8,
     author = {T. V. Moiseenkova and J. N. Nuzhin},
     title = {Intermediate subgroups of the {Steinberg} groups over the field of fractions of a~principal ideal ring},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {60--66},
     publisher = {mathdoc},
     volume = {12},
     number = {4},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2010_12_4_a8/}
}