%0 Journal Article %A Blanchini, Franco %T Eigenvalue assignment via state observer for descriptor systems %J Kybernetika %D 1991 %P 384-392 %V 27 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1991__27_4_a9/ %G en %F KYB_1991__27_4_a9