@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/}
}