TY - JOUR AU - B. A. Dubrovin TI - Differential geometry of strongly integrable systems of hydrodynamic type JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1990 SP - 25 EP - 30 VL - 24 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1990_24_4_a2/ LA - ru ID - FAA_1990_24_4_a2 ER -