TY  - JOUR
AU  - V. M. Kopytov
TI  - Contractions of infrainvariant systems of subgroups
JO  - Algebra i logika
PY  - 2009
SP  - 606
EP  - 627
VL  - 48
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_2009_48_5_a3/
LA  - ru
ID  - AL_2009_48_5_a3
ER  -