TY - JOUR AU - V. V. Kalashnikov TI - Typical integrable Hamiltonian systems on a four-dimensional symplectic manifold JO - Izvestiya. Mathematics PY - 1998 SP - 261 EP - 285 VL - 62 IS - 2 UR - http://geodesic.mathdoc.fr/item/IM2_1998_62_2_a2/ LA - en ID - IM2_1998_62_2_a2 ER -