%0 Journal Article %A Stamov, G. %T Application of Lyapunov's Direct Method to the Existence of Integral Manifolds of Impulsive Differential Equations %J Serdica Mathematical Journal %D 1996 %P 83-90 %V 22 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SMJ2_1996_22_2_a1/ %G en %F SMJ2_1996_22_2_a1