%0 Journal Article %A V. A. Brusin %T Frequency conditions in problems of $H^\infty$-control and of absolute stabilization %J Doklady Akademii Nauk %D 1996 %P 603-605 %V 346 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1996_346_5_a6/ %G ru %F DAN_1996_346_5_a6