@article{RM_1971_26_3_a15,
     author = {T. S. Tol'skaya},
     title = {On co-generating rings},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {26},
     number = {3},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1971_26_3_a15/}
}