TY  - JOUR
AU  - P. de la Harpe
AU  - R. I. Grigorchuk
TI  - Local convexity of growth functions of finitely generated
JO  - Algebra i logika
PY  - 1998
SP  - 621
EP  - 626
VL  - 37
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1998_37_6_a0/
LA  - ru
ID  - AL_1998_37_6_a0
ER  -