%0 Journal Article %A Futák, Ján %T Oscillation of solutions of a non-linear delay differential equation of the fourth order %J Archivum mathematicum %D 1975 %P 25-29 %V 11 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1975__11_1_a1/ %G en %F ARM_1975__11_1_a1