%0 Journal Article %A Grammatikopoulos, Myron K. %A Kelevedjiev, Petio S. %T Minimal and maximal solutions for two-point boundary-value problems %J Electronic journal of differential equations %D 2003 %V 2003 %U http://geodesic.mathdoc.fr/item/EJDE_2003__2003__a120/ %G en %F EJDE_2003__2003__a120