TY - JOUR AU - B. Melnikov TI - On $\omega$-languages of special billiards JO - Diskretnaya Matematika PY - 2002 SP - 95 EP - 108 VL - 14 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DM_2002_14_3_a9/ LA - ru ID - DM_2002_14_3_a9 ER -