TY - JOUR AU - B. A. Kupershmidt AU - Yu. I. Manin TI - Equations of long waves with a free surface. II. Hamiltonian structure and higher equations JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1978 SP - 25 EP - 37 VL - 12 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1978_12_1_a2/ LA - ru ID - FAA_1978_12_1_a2 ER -