@article{AL_1971_10_4_a4,
     author = {N. S. Romanovskii},
     title = {Identity bases for certain matrix groups},
     journal = {Algebra i logika},
     pages = {401--406},
     publisher = {mathdoc},
     volume = {10},
     number = {4},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1971_10_4_a4/}
}