%0 Journal Article %A J.P. Gathier %A I.A.K. Kupka %T Oberservability for systems with more outputs than inputs and asymptotic oberservers. %J Mathematische Zeitschrift %D 1996 %P 47-78 %V 223 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1996__223_3_174910/ %G en %F MZ_1996__223_3_174910