@article{ZNSL_1987_160_a17,
     author = {I. Z. Golubchik and A. V. Mikhalev},
     title = {Rich subgroups of unitary groups over skew fields},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {193--200},
     publisher = {mathdoc},
     volume = {160},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1987_160_a17/}
}