%0 Journal Article %A J. Kloch %T A necessary and sufficient condition for normality of linear control system with delays %J Annales Polonici Mathematici %D 1977 %P 305-312 %V 35 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-35-3-305-312/ %R 10.4064/ap-35-3-305-312 %G en %F 10_4064_ap_35_3_305_312