TY - JOUR AU - Ma, Ruyun TI - Positive solutions of a nonlinear three-point boundary-value problem JO - Electronic Journal of Differential Equations PY - 1999 VL - 1999 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_1999__1999__a134/ LA - en ID - EJDE_1999__1999__a134 ER -