@article{IVM_1972_3_a5, author = {E. M. Levich and G. I. Geideman}, title = {Triangulability of groups and rings}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {41--45}, publisher = {mathdoc}, number = {3}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1972_3_a5/} }