%0 Journal Article %A Medveď, Milan %T Oscillatory properties of some classes of nonlinear differential equations %J Mathematica Bohemica %D 1992 %P 123-131 %V 117 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.1992.125910/ %R 10.21136/MB.1992.125910 %G en %F 10_21136_MB_1992_125910