%0 Journal Article
%A A. F. Zubova
%T A study of stability and instability zones for equations of the
%J Doklady Akademii Nauk
%D 1992
%P 483-485
%V 325
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1992_325_3_a12/
%G ru
%F DAN_1992_325_3_a12