%0 Journal Article %A I. V. Mel'nikova %A A. I. Filinkov %T Classification and well-posedness of the Cauchy problem for %J Doklady Akademii Nauk %D 1984 %P 1066-1071 %V 276 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1984_276_5_a9/ %G ru %F DAN_1984_276_5_a9