%0 Journal Article %A Martišovitš, Ilja %T Existence of positive solutions to vector boundary value problems. I %J Mathematica slovaca %D 1999 %P 453-479 %V 49 %N 4 %U http://geodesic.mathdoc.fr/item/MASLO_1999_49_4_a6/ %G en %F MASLO_1999_49_4_a6