%0 Journal Article %A T. I. Kiguradze %A T. Kusano %T Ill-Posed Initial-Boundary Value Problems for Higher-Order Linear Hyperbolic Equations with Two Independent Variables %J Differencialʹnye uravneniâ %D 2003 %P 1379-1394 %V 39 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2003_39_10_a8/ %G ru %F DE_2003_39_10_a8