TY - JOUR AU - Orucoglu, Kamil TI - A new Green function concept for fourth-order differential equations JO - Electronic journal of differential equations PY - 2005 VL - 2005 UR - http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a91/ LA - en ID - EJDE_2005__2005__a91 ER -