@article{DAN_1967_176_2_a7,
     author = {L. A. Nazarova and A. V. Roiter},
     title = {A sharpening of a theorem of {Bass}},
     journal = {Doklady Akademii Nauk},
     pages = {266--268},
     publisher = {mathdoc},
     volume = {176},
     number = {2},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_176_2_a7/}
}