TY  - JOUR
AU  - R. I. Grigorchuk
TI  - Degrees of growth of finitely generated groups, and the theory of invariant means
JO  - Izvestiya. Mathematics 
PY  - 1985
SP  - 259
EP  - 300
VL  - 25
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1985_25_2_a1/
LA  - en
ID  - IM2_1985_25_2_a1
ER  -