@article{AL_1985_24_4_a3,
     author = {S. Tazhetdinov},
     title = {Subnormal structure of two-dimensional linear groups over},
     journal = {Algebra i logika},
     pages = {414--425},
     publisher = {mathdoc},
     volume = {24},
     number = {4},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1985_24_4_a3/}
}