%0 Journal Article %A Helmke, Uwe %A Prechtel, Michael %A Shayman, Mark A. %T Riccati-like flows and matrix approximations %J Kybernetika %D 1993 %P 563-582 %V 29 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1993__29_6_a3/ %G en %F KYB_1993__29_6_a3