TY  - JOUR
AU  - Voráč, František
TI  - Subgroups and normal subgroups as systems of ideals
JO  - Archivum mathematicum
PY  - 1980
SP  - 239
EP  - 244
VL  - 16
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ARM_1980__16_4_a8/
LA  - en
ID  - ARM_1980__16_4_a8
ER  -