TY - JOUR AU - Mavridis, Kyriakos G. AU - Tsamatos, Panagiotis Ch. TI - Two positive solutions for second-order functional and ordinary boundary-value problems JO - Electronic journal of differential equations PY - 2005 VL - 2005 UR - http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a21/ LA - en ID - EJDE_2005__2005__a21 ER -