%0 Journal Article %A Datta, K. B. %T A new criterion for strong observability %J Kybernetika %D 1985 %P 61-64 %V 21 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1985__21_1_a5/ %G en %F KYB_1985__21_1_a5