TY - JOUR AU - Xu, Xian TI - Multiple sign-changing solutions for some m-point boundary-value problems JO - Electronic Journal of Differential Equations PY - 2004 VL - 2004 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_2004__2004__a7/ LA - en ID - EJDE_2004__2004__a7 ER -