%0 Journal Article %A D. Willett %T Some Boundedness and Unboundedness Results for the Equation x'' + a(t) x2 n-1 = 0. %J Monatshefte für Mathematik %D 1967 %P 461-465 %V 71 %I mathdoc %U http://geodesic.mathdoc.fr/item/MOMA_1967__71_177403/ %F MOMA_1967__71_177403