@article{VMUMM_1985_1_a6,
     author = {I. Z. Golubchik and A. V. Mikhalev},
     title = {Elementary subgroup of a unitary group over a {PI-ring}},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {30--36},
     publisher = {mathdoc},
     number = {1},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1985_1_a6/}
}