%0 Journal Article %A A. F. Gabdrahimov %A V. A. Zaitsev %T Lyapunov reducibility for four-dimensional linear stationary control systems in the class of the piecewise-constant control functions %J Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki %D 2006 %P 25-40 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/VUU_2006_1_a2/ %G ru %F VUU_2006_1_a2