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@article{DAN_1973_210_6_a8, author = {A. V. Romanovskii}, title = {Characters and normal subgroups of finite groups}, journal = {Doklady Akademii Nauk}, pages = {1288--1289}, publisher = {mathdoc}, volume = {210}, number = {6}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1973_210_6_a8/} }
A. V. Romanovskii. Characters and normal subgroups of finite groups. Doklady Akademii Nauk, Tome 210 (1973) no. 6, pp. 1288-1289. http://geodesic.mathdoc.fr/item/DAN_1973_210_6_a8/