TY  - JOUR
AU  - V. M. Kopytov
AU  - J. Rachůnek
TI  - The Greatest Proper Variety of $m$-Groups
JO  - Algebra i logika
PY  - 2003
SP  - 624
EP  - 635
VL  - 42
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_2003_42_5_a4/
LA  - ru
ID  - AL_2003_42_5_a4
ER  -