%0 Journal Article
%A V. A. Yakubovich
%T Minimization of quadratic functionals under quadratic constraints and the necessity of a frequency condition in the quadratic criterion for absolute stability of nonlinear control systems
%J Doklady Akademii Nauk
%D 1973
%P 1039-1042
%V 209
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1973_209_5_a9/
%G ru
%F DAN_1973_209_5_a9