TY - JOUR AU - R. Miyaoka TI - Hypersurface geometry and hamiltonian systems of hydrodynamic type JO - Lobachevskii journal of mathematics PY - 1999 SP - 209 EP - 220 VL - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/LJM_1999_3_a11/ LA - en ID - LJM_1999_3_a11 ER -