%0 Journal Article %A Mavridis, Kyriakos G. %A Tsamatos, Panagiotis Ch. %T Two positive solutions for second-order functional and ordinary boundary-value problems %J Electronic Journal of Differential Equations %D 2005 %V 2005 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a21/ %G en %F EJDE_2005__2005__a21