%0 Journal Article %A Rostás, Kristína %T Minimal and maximal solutions of fourth order iterated differential equations with singular nonlinearity %J Archivum mathematicum %D 2011 %P 23-33 %V 47 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_2011__47_1_a2/ %G en %F ARM_2011__47_1_a2