TY  - JOUR
AU  - Ya. B. Vorobets
TI  - Actions of Finitely Generated Groups and Semigroups on a Plane by Means of Isometries
JO  - Matematičeskie zametki
PY  - 2004
SP  - 523
EP  - 548
VL  - 75
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_2004_75_4_a3/
LA  - ru
ID  - MZM_2004_75_4_a3
ER  -