%0 Journal Article %A M. M. Konstantinov %A P. Hr. Petkov %T Condition an Error Estimates in the Solution of Lyapunov and Riccati Equations %J Mathematica balkanica %D 2001 %P 139 %V 15 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_2001_15_1-2_a12/ %F MABA_2001_15_1-2_a12