%0 Journal Article %A Dimitar P. Tsvetkov %T Asymptotic Bifurcation in Systems for Control with Delay %J Mathematica balkanica %D 1992 %P 375 %V 6 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_1992_6_4_a9/ %F MABA_1992_6_4_a9