%0 Journal Article
%A N. N. Butenina
%A N. S. Starodubrovskaya
%T A stable fixed focus and its immunity zone in a second-order controlled dynamical system
%J Differencialʹnye uravneniâ
%D 2004
%P 1468-1478
%V 40
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_2004_40_11_a3/
%G ru
%F DE_2004_40_11_a3