%0 Journal Article %A Doležal, Václav %T A remark on energetic stability of feedback systems %J Applications of Mathematics %D 1969 %P 345-354 %V 14 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1969.103245/ %R 10.21136/AM.1969.103245 %G en %F 10_21136_AM_1969_103245