%0 Journal Article %A Kiguradze, T. %T On the Dirichlet problem in a characteristic rectangle for fourth order linear singular hyperbolic equations. %J Georgian Mathematical Journal %D 1999 %P 537-552 %V 6 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/GMJ_1999__6_6_48322/ %G en %F GMJ_1999__6_6_48322