%0 Journal Article %A Pommaret, Jean-François %T Poles and zeroes of nonlinear control systems %J Kybernetika %D 2002 %P 609-615 %V 38 %N 5 %U http://geodesic.mathdoc.fr/item/KYB_2002_38_5_a8/ %G en %F KYB_2002_38_5_a8