%0 Journal Article %A Nguyen Manh Hung %A Vu Trong Luong %T $L_p$-regularity of solutions to first initial-boundary value problem for hyperbolic equations in cusp domains %J Electronic Journal of Differential Equations %D 2009 %V 2009 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a62/ %G en %F EJDE_2009__2009__a62