%0 Journal Article %A Eisner, Jan %A Kučera, Milan %T Hopf bifurcation and ordinary differential inequalities %J Czechoslovak Mathematical Journal %D 1995 %P 577-608 %V 45 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1995.128556/ %R 10.21136/CMJ.1995.128556 %G en %F 10_21136_CMJ_1995_128556