%0 Journal Article %A V. M. Leontovich %T The Cauchy problem and a mixed problem for strongly quasi-parabolic systems and quasi-Schr\"odinger systems %J Doklady Akademii Nauk %D 1973 %P 263-266 %V 210 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_210_2_a2/ %G ru %F DAN_1973_210_2_a2