TY - JOUR AU - A. V. Borisov AU - I. S. Mamaev TI - Isomorphisms of geodesic flows on quadrics JO - Russian journal of nonlinear dynamics PY - 2009 SP - 145 EP - 158 VL - 5 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ND_2009_5_2_a0/ LA - ru ID - ND_2009_5_2_a0 ER -