%0 Journal Article %A A. M. Kerbelev %T Frequency criteria for the robustness of nonlinear systems with %J Doklady Akademii Nauk %D 1995 %P 749-752 %V 341 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1995_341_6_a6/ %G ru %F DAN_1995_341_6_a6