%0 Journal Article %A T. I. Kiguradze %A T. Kusano %T Well-Posedness of Initial-Boundary Value Problems for Higher-Order Linear Hyperbolic Equations with Two Independent Variables %J Differencialʹnye uravneniâ %D 2003 %P 516-526 %V 39 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2003_39_4_a9/ %G ru %F DE_2003_39_4_a9