%0 Journal Article %A Andres, Ján %T On stability and instability of the roots of the oscillatory function in a certain nonlinear differential equation of the third order %J Časopis pro pěstování matematiky %D 1986 %P 225-229 %V 111 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CPM.1986.108157/ %R 10.21136/CPM.1986.108157 %G en %F 10_21136_CPM_1986_108157