TY - JOUR AU - Ya. B. Vorobets TI - On the Uniform Distribution of Orbits of Free Group and Semigroup Actions on a~Plane JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 2000 SP - 64 EP - 95 VL - 231 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_2000_231_a2/ LA - ru ID - TM_2000_231_a2 ER -