TY - JOUR AU - V. V. Vedyushkina (Fokicheva) AU - A. T. Fomenko TI - Integrable geodesic flows on orientable two-dimensional surfaces and topological billiards JO - Izvestiya. Mathematics PY - 2019 SP - 1137 EP - 1173 VL - 83 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_2019_83_6_a1/ LA - en ID - IM2_2019_83_6_a1 ER -