%0 Journal Article %A Mitkowski, Wojciech %T Analysis of undamped second order systems with dynamic feedback %J Control and Cybernetics %D 2004 %P 563-572 %V 33 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CC_2004_33_4_a3/ %G en %F CC_2004_33_4_a3