%0 Journal Article %A Škerlík, Anton %T Oscillation theorems for third order nonlinear differential equations %J Mathematica slovaca %D 1992 %P 471-484 %V 42 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1992__42_4_a9/ %G en %F MASLO_1992__42_4_a9