%0 Journal Article %A Wyrwas, M. %T Analytic control systems and their properties related to observers. %J Rendiconti del seminario matematico %D 2006 %P 111-119 %V 64 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RSM_2006__64_1_55920/ %G en %F RSM_2006__64_1_55920