TY  - JOUR
AU  - Ya. D. Polovitskii
TI  - Locally extremal groups and groups with $\pi$-minimality condition
JO  - Doklady Akademii Nauk
PY  - 1961
SP  - 1022
EP  - 1024
VL  - 138
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1961_138_5_a9/
LA  - ru
ID  - DAN_1961_138_5_a9
ER  -