TY - JOUR AU - S. V. Naydenov AU - V. V. Yanovskii TI - Geometric-Dynamic Approach to Billiard Systems: II.~Geometric Features of Involutions JO - Teoretičeskaâ i matematičeskaâ fizika PY - 2001 SP - 116 EP - 130 VL - 129 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_2001_129_1_a10/ LA - ru ID - TMF_2001_129_1_a10 ER -