@article{107080,
author = {Franti\v sek Vor\'a\v c},
title = {Subgroups and normal subgroups as systems of ideals},
journal = {Archivum Mathematicum},
volume = {016},
year = {1980},
pages = {239-244},
mrnumber = {0594472},
language = {en},
url = {http://dml.mathdoc.fr/item/107080}
}
Voráč, František. Subgroups and normal subgroups as systems of ideals. Archivum Mathematicum, Tome 016 (1980) pp. 239-244. http://gdmltest.u-ga.fr/item/107080/
Theory of x-ideals, Acta Math., vol. 107 (1962), 1-52. (1962) | MR 0148773 | Zbl 0108.26002