TY - JOUR AU - Midodashvili, Bidzina TI - A nonlocal problem for fourth order hyperbolic equations with multiple characteristics JO - Electronic Journal of Differential Equations PY - 2002 VL - 2002 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_2002__2002__a103/ LA - en ID - EJDE_2002__2002__a103 ER -